What's the difference between Topic and Search term in Google Trends?

A Topic is a Google Knowledge Graph entity — it includes synonyms, abbreviations, and related variations automatically. A Search term captures only exact string matches and close variations. For Shopify product research, start with Topic for overall demand, then drill into specific search terms to see exactly how shoppers phrase their queries.

Google Trends for Shopify Stores: How to Use Trend Signals to Pick the Right Products and Content

Tools

By Kelvin Leng May 17, 2026

This guide pairs with SEO Tools for Shopify Stores for the broader tool stack and when to combine Trends with Keyword Planner and Ahrefs, SEO Competitor Analysis for Shopify Stores for how to use Trends data in a competitor gap workflow, and SEM for Shopify Stores when aligning Google Shopping trend signals with paid ad timing. Author: Kelvin Leng (8 years on Shopify Plus storefronts).

Google Trends doesn’t show you search volume — it shows you direction. For a Shopify store, that’s often more useful than the raw number. A product category with 5,000 monthly searches that’s declining year-over-year is a worse bet than one with 800 monthly searches and a clear upward trend. This guide covers how to read the 0-100 index correctly, how to use Trends for product research, seasonal planning, and content strategy, and how to combine it with Keyword Planner and other tools so your decisions stop running on gut feel.

What Google Trends Actually Is

Google Trends is Google’s free search trend analysis tool. It tracks how interest in a keyword changes over time and across geography. The data comes from a random sample of Google searches, normalized into a 0-100 relative index so you can compare different keywords directly.

The thing to understand first: Google Trends doesn’t give you absolute search volume. That’s by design. The question Trends answers is “is this rising or falling right now?” — not “how many people search this per month?” Those are completely different questions, and confusing them is the most common mistake.

Someone sees an interest score of 80 and assumes that means 80 monthly searches. It doesn’t. It means “at this point in time, search intensity is at 80% of the peak in the time range you selected.” That difference affects every decision you’d make based on the data.

Trend Direction vs. Search Volume

Google Trends shows you the relative interest score within the time range you set, with 100 representing the highest point. So the same keyword can show completely different numbers depending on whether you set the range to past 90 days vs past 5 years — but the trend shape stays the same.

For Shopify store owners, direction is often more valuable than volume. A keyword with 500 monthly searches and a steady upward trend is usually a better product opportunity than a keyword with 2,000 searches that’s been declining for three years. The second one is a shrinking market; the first one is an emerging one.

The practical workflow: use Trends to confirm direction, then use Google Keyword Planner to confirm scale. See SEO Tools for Shopify Stores for when to add Ahrefs or SEMrush to that stack.

The Three Main Sections of Google Trends

Google Trends has three main areas: Home, Explore, and Trending Now. For Shopify product research and content planning, Explore is where most of the work happens. The other two are supplements.

Home — automatically shows the top 5 trending searches in your region, with 24-hour trend charts and related news. Updates every 12–24 hours. Useful for keeping a pulse on culture, not for serious product research.
Explore — input any keyword, customize the region, time range (going back to 2004), category, and search type (Web Search, YouTube, Google Shopping, Google News, Google Images). The bottom shows “Related Topics” and “Related Queries” — both critical for product and content discovery.
Trending Now — real-time trending searches, updates every 10 minutes across 125 countries. Useful for viral moments, less useful for ecommerce planning unless you sell products that intersect with breaking news.

Using Explore Correctly

The four filters in Explore look simple, but each one set wrong makes the data meaningless.

Region — defaults to worldwide. Set this to your actual market (US, your specific country). Regional and global numbers can’t be directly compared.
Time range — for seasonality analysis, use “past 5 years.” For short-term trend watching, “past 90 days.” If you want to see if a category is genuinely growing or just hitting a seasonal peak, never look at only “past 12 months.”
Category — leave as “All categories” by default. Only specify when the keyword has multiple meanings (does “apple” mean the fruit or the brand?).
Search type — defaults to Web Search. For ecommerce specifically, switching to Google Shopping is one of the most underused features. The trend on Google Shopping queries is much closer to actual purchase intent than general web searches.

For Shopify stores in particular, that last point matters. Google Shopping trends often diverge meaningfully from Web Search trends. A product category might be flat in web search but climbing in Shopping search — which tells you commercial intent is rising even if information-gathering is stable.

Reading the 0-100 Interest Score Without Misinterpreting It

The 0-100 score represents relative search intensity. 100 is the peak point within your selected time range and region. Everything else is scaled to that peak. A score of 0 doesn’t mean nobody is searching — it means the volume is too low to register in the sample.

This has an important consequence: you can’t compare absolute search volumes across keywords using Trends alone. Keyword A with a score of 80 might have 10,000 monthly searches. Keyword B with the same score might have 200. They look identical in Trends, but actual volume can differ by 50x.

What Trends can tell you reliably:

Situation	What Trends shows	Comparable?
Same keyword, different time points	Trend direction (rising/falling/seasonal)	Yes
Same query, multiple keywords	Relative strength between them	Yes
Different queries, different keywords	Different baselines — not comparable	No
Trends score vs search volume	Completely different dimensions	No

For Shopify stores selling niche products: keywords with low search volume (under a few hundred per month) often show 0 or missing data. That doesn’t mean nobody searches — it just means the sample is too small to register. Cross-reference with Google Keyword Planner before concluding there’s no demand.

Five Ways Shopify Store Owners Should Use Google Trends

The biggest value of Google Trends for ecommerce is that it gives you forward-looking signals, not just backward-looking data. Search volume tools tell you what’s been accumulating. Trends tells you which direction things are heading. That difference matters when deciding what products to push, what content to write, and when to launch.

A useful mental model: trend direction first, then volume. Use Trends to confirm direction, then use Keyword Planner or Ahrefs to confirm scale. This sequencing puts you in the right market at the right time more often than going volume-first.

1. Tell Seasonal Spikes Apart From Real Growth

Set the time range to 5 years and you can immediately distinguish three completely different keyword types:

Seasonal — annual peaks at the same time each year
Steady growth — overall upward trend with normal fluctuations
Declining — overall downward trend, even if volume is still present

These three need completely different Shopify strategies. Seasonal products need landing pages and ad campaigns optimized 2–3 months ahead of peak. Steady-growth categories deserve deep content investment because the audience is expanding. Declining categories should be deprioritized unless margins justify defensive optimization.

Looking at static volume in Keyword Planner alone won’t tell you these apart. Trends is the only free tool that surfaces this dimension.

For Shopify specifically, seasonality maps directly to inventory planning. If your product category peaks in November–December, you need to be building organic visibility starting in August or September. If your category peaks in May–July, the prep starts in February. This timing also aligns with when to run paid search — see SEM for Shopify Stores for how to match Google Shopping campaigns to these windows.

2. Spot Rising Subcategories Before Competitors Do

When planning a content cluster or expanding into adjacent product categories, drop several candidate subtopics into Trends together and look for the ones with upward momentum.

Rising subcategories often haven’t yet attracted dense competitor content. That’s the gold window for SEO: rising demand plus low content saturation. For how to evaluate competitor content depth once you’ve found a rising subcategory, see SEO Competitor Analysis for Shopify Stores.

For a Shopify store selling kitchenware, you might compare “ceramic non-stick pan,” “carbon steel pan,” “stainless steel pan,” and “cast iron pan” over the past 5 years. If carbon steel is trending up while the others are flat, that’s a signal to invest in buying guides, product expansion, and content for that subcategory before competitors notice.

The “Rising” filter inside Related Queries shows queries with the highest growth rates relative to total volume — often emerging needs not yet covered by existing content.

3. Find Regional Demand Differences

You can narrow region down to state or even city level (in the US and several other countries) and see where demand for a keyword is strongest.

For a Shopify store with physical retail or limited geographic shipping, this is direct product-market fit data. If your store operates in Texas but Trends shows the strongest demand for your product is in Florida, that’s a real expansion signal — or at minimum, a localization signal for your ad targeting and content.

After searching a keyword, two modules at the bottom of Explore become important: Related Topics (broader concepts Google identifies as semantically connected) and Related Queries (specific search strings).

The “Rising” filter specifically shows topics with high growth rates — often emerging needs without dense competitor content yet.

For Shopify product research, this is how you find:

Emerging product types in your category nobody is stocking yet
New use cases for products you already carry
Adjacent problems customers want solved (which become buying guide topics)
Comparison queries (“X vs Y”) that signal purchase decision moments

5. Compare Web Search vs Google Shopping Trends

The same keyword can have very different trends in Web Search vs Google Shopping. Educational searches often hold steady in Web while Shopping searches peak earlier — meaning purchase decisions happen before peak content interest. Product review queries often have longer tails in Web (people researching) while Shopping shows the actual buying window.

For Shopify store owners: if Shopping trends peak 2–4 weeks before Web search trends, your shopping ads and product listings need to be optimized earlier than your content. Switch the Explore search type to “Google Shopping” for any product category you sell and you’ll often see patterns invisible in default Web Search data.

A Practical Trend-First Workflow for Shopify SEO

Step 1: Trend direction (Google Trends). Set region to your market, time range to past 5 years. Is this keyword/product category rising, falling, or seasonal? Don’t proceed unless the direction makes sense for your business.

Step 2: Volume scale (Google Keyword Planner). Now that you know the direction is favorable, check actual search volume. Is there enough volume to justify the SEO investment? For Shopify, anything generating less than ~100 monthly searches usually needs to be combined with other terms into broader content.

Step 3: Competition difficulty (Ahrefs, SEMrush, or manual SERP check). Is the keyword too competitive for your store’s current authority? Are there content gaps in the top-ranking pages? See SEO Competitor Analysis for Shopify Stores for the full workflow.

Step 4: Commercial intent check (Google Shopping in Trends). Does the Shopping trend match the Web Search trend? If Web is rising but Shopping is flat, the searches might be research without buying intent.

Three tools, four steps, clear decision criteria. The mistake most owners make is starting with Step 2 (volume) without checking Step 1 (direction) — leading to investment in keywords that look good on paper but are shrinking in reality.

Google Trends vs Google Keyword Planner: When to Use Each

These tools answer different questions. Use them together, not as substitutes.

	Google Trends	Google Keyword Planner
Cost	Free	Free (Ads account required)
Data type	Relative trend index (0-100)	Monthly search volume (absolute)
Time range	Back to 2004	Past 4 years
Real-time	Down to hourly	Monthly average, with delay
Geographic detail	State/city level	Country level
Best use	Direction, seasonality, timing	Volume estimation, long-tail discovery

The standard workflow: Trends to filter direction, Keyword Planner to confirm scale, Ahrefs to assess competition. Each tool has its own job. See SEO Tools for Shopify Stores for the full comparison of paid tool options at each revenue stage.

Advanced: Google Trends API and Data Export

Google launched the Google Trends API (alpha) in 2025 — the first official programmatic access in the tool’s history. For Shopify stores with developer resources, this is a meaningful upgrade over previous unofficial scraper workarounds.

CSV Export (No API Needed)

Without API access, the Explore page has a download button (top-right of each chart) that exports the current data as CSV. You can compare up to 5 keywords at once and export them together — useful for building a monitoring spreadsheet across your product category portfolio.

Google Shopping Search Type for Ecommerce

Switching to Google Shopping in Trends gives you trend data specifically for shopping-intent searches:

See which product categories are gaining commercial momentum vs just informational interest
Identify when shopping demand peaks vs when content demand peaks — often different
Spot rising product types that buyers are searching for before competitors notice
Plan ad spend, inventory, and content production timing around actual purchase windows

Frequently Asked Questions

Is Google Trends completely free? Yes, fully free. No Google account needed for basic queries. Signing in lets you save searches, but there are no paid features. The only adjacent cost is Google Keyword Planner — which requires a Google Ads account, and precise search volumes require active ad spend on that account.

How far back does Google Trends data go? Web Search data goes back to January 2004 — the deepest free historical search data publicly available anywhere. YouTube data starts from 2008. Google Shopping, News, and Images have shorter ranges. For long-term category trend analysis (10+ years), Trends is the only free option.

My niche product shows 0 in Trends. What does that mean? The volume is too low to register in Trends’ sample — not that nobody searches. For niche Shopify products, this is common. Cross-reference with Google Keyword Planner to see actual volume, and check Ahrefs or similar for keyword variations that might capture demand differently.

Can Shopify stores use Google Trends for inventory planning? Yes, with a caveat: search trends usually precede actual purchase behavior by 2–4 weeks. Rising search interest is an early signal, not a confirmation. Switch the search type to Google Shopping for more purchase-intent-aligned data. Pair with your store’s GA4 and Shopify analytics to identify your specific lead time from search interest to conversion.

What’s the difference between “Topic” and “Search term” in Trends? A Topic is a Google Knowledge Graph entity — it includes synonyms, abbreviations, and related variations. Searching the “coffee” topic includes data on “coffee,” “latte,” “espresso,” and similar. A Search term captures only exact string matches. For Shopify product research, start with Topic for overall demand, then drill into specific search terms to see exactly how shoppers phrase queries.

How does Google Shopping search type help Shopify stores? It shows purchase-intent searches specifically, not general information searches. Shopping trends often peak earlier than Web search trends — meaning your shopping ads and product listings need to be optimized before content marketing efforts. Especially valuable for seasonal categories.

Should I use Trends to decide what new products to stock? It’s one input, not the whole decision. Trends tells you direction — useful for spotting rising categories or avoiding declining ones. But trend direction doesn’t tell you margins, supplier availability, or competition density. Use Trends to filter the universe of possibilities, then validate with Keyword Planner (volume) and Ahrefs (competition).

Can Google Trends and Ahrefs work together? Strongly recommended. Trends gives you direction and timing signals; Ahrefs gives you precise volume, keyword difficulty, and competitor data. The practical workflow: use Trends to find rising product categories, then use Ahrefs to validate scale and assess competition difficulty. Using just one leaves blind spots.