When SEO was first emerging as a strategy, there was one consideration more important than any other: keywords.
First, you’d do exhaustive keyword research to see where you ranked versus a leading competitor, and evaluate how much traffic those keywords received.
Eventually, you’d identify a handful of “target” keywords to use in your campaign (picking ones with the highest search volume and lowest competition rating), and start injecting those keywords into your meta data, body content, and external links.
Now, there’s a new school of thought with regard to keywords, thanks to Google’s semantic search capabilities; it’s better to select key topics, rather than keywords specifically, to avoid the temptation of over-optimizing or “keyword stuffing” and go after niche opportunities that address consumer inquiries.
But what exactly is the difference between keywords and topics, and which one is more important if your end goal is search engine visibility?
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Google and LLMs Don’t Use Keywords Like They Used To: The Rise of Topics and Semantic SEO
While keywords signal what people search for, topics provide the broader context.
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Definition: A topic is a thematic area covering multiple related keywords.
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Why the Shift?: Google updates like Hummingbird, RankBrain, and BERT shifted ranking factors toward understanding intent and meaning—not just words.
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Topical Authority:
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Covering a subject comprehensively signals expertise.
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Instead of writing a single post on “best running shoes,” create a cluster of content around running gear, training tips, injury prevention, and reviews.
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This depth demonstrates authority, increasing the odds of ranking across an entire niche.
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In short: keywords open the door, but topics build the house.
Allow me to demonstrate this with the search query “how to find a good suit”:
Notice there aren’t any top results with the exact phrase “good suit” or “find a good suit,” which we could take to be the core keywords in this query. Instead, Google has evaluated my intention: figuring out how to buy a good, well-fitting, general purpose suit, and has come up with options like “How to buy a suit,” and “how should a suit fit? Your easy-to-follow visual guide.” These topics don’t match my query keyword-for-keyword, but they serve this function and therefore rank.
This is only one example, but it illustrates my point that good content topics have a stronger tendency to rank than topics with specifically selected keywords.
The answer to many of these issues can also be couched in the fact that object-level optimization now trumps keyword-to-page optimization.
Keywords vs. Topics: Core Differences
Here’s a side-by-side breakdown:
| Attribute | Keywords | Topics |
| Definition | Specific search terms used by users | Broader themes that organize multiple keywords |
| Focus | Narrow (one phrase or query) | Wide (concepts, related questions, subtopics) |
| SEO Role | Helps match queries to content | Builds authority and contextual depth |
| Measurement | Search volume, CPC, keyword difficulty | Topical coverage, authority, engagement |
| Example | “Best running shoes” | Running gear, training, and health content cluster |
Which Is More Important Today?
The truth is: both matter, but in different ways.
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Google favors intent and topical relevance over repetitive keywords.
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Keywords still guide optimization and help track measurable demand.
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Topics, however, establish long-term authority and make it easier to rank for dozens (or hundreds) of related searches.
A single keyword might get you a click, but topical authority keeps you visible for the full customer journey.
Topic-based optimization focuses on writing for users, not search engines
It’s important to consider the fact that while not always the case, striving to include more keywords often leads to inferior content from a user experience perspective. Stuffing keywords into your pages, blogs, and body content will come across as unnatural, and probably won’t serve your users’ needs with any degree of utility. Choosing topics, then, is a way of writing for users more than search engines, which does come with advantages and disadvantages. As a general rule, I side with user experience; I wouldn’t stand much to gain by ranking if my user experience left a bad impression.
Topic-based optimization comes at the cost of search volume
Again, this is a general rule, so bear that in mind. When choosing topics, you usually opt for highly specific, long-tail phrases over shorter, more common keywords. That means you’ll likely have a higher relevance and a faster path to the top with a topics, but much lower search volume.
Note the difference between “avocado recipes” and “how to prepare an avocado”:
The difference is dramatic. (Also note how popular avocados have become since 2009).
Search volume isn’t everything, but it is an important consideration.
For example, let’s say I’ve searched for “avocado recipes” as in the above illustration:
The results, as you might imagine, are avocado recipes—and only recipes. There are no topics or articles that explain why avocados are a good ingredient, or what types of dishes they’re used in, or how to prepare them once you’ve got a recipe in mind. In this way, you can’t always be certain that your choice of topics will appear for your intended range of queries.
Practical SEO Strategy—Blending Keywords and Topics
The best SEO strategies don’t choose—they integrate.
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Start with keyword research: Use tools like Ahrefs, SEMrush, or Google Keyword Planner.
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Map keywords to topics: Group related terms into clusters.
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Create pillar content: A comprehensive page on the main topic.
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Support with cluster content: Write articles targeting subtopics and link them back to the pillar.
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Use internal linking: This signals topical relationships to search engines.
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Update regularly: Keep both keywords and topics fresh as search behavior evolves.
The Future of SEO—Beyond Keywords and Topics
SEO is heading toward entities, context, and AI-driven search.
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AI & LLMs (Large Language Models): Systems like ChatGPT and Google’s Search Generative Experience focus less on keywords and more on semantic meaning.
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Entity-based optimization: Instead of just keywords, optimizing for people, places, brands, and concepts.
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Voice & conversational search: Queries are more natural (“What are the best running shoes for marathons?”), making context and topical depth critical.
In this future, keywords remain the spark, but topics and entities fuel the fire.
Guesswork is inadvisable
Going along with this, keyword-based SEO strategies have always been rooted in data; you evaluate the search volume, monitor the competition, and calculate a kind of cost-to-benefit ratio before deciding which ones to move on. Topic selection is a much more qualitative approach; you might conduct surveys and evaluate the past performance of your content, but there isn’t much hard data to back up your assumptions. In marketing, assumptions are almost universally bad, so unless you have hard data to guide you in your choice of topics, you stand to lose significant potential.
Ongoing content is only one application
So far, I’ve only discussed keywords as they relate to ongoing content. When it comes to site pages, title tags, meta descriptions, and even anchor text for your links (though you must be careful not to over-optimize your anchor text), keywords play an important role.
Additionally, these applications carry less of a user experience detraction than their application in content alone. Thus, keywords are still better than general topics in at least some applications.
Conclusion
Keywords and topics aren’t competitors—they’re partners. Keywords show you what users are searching for, while topics help you build the authority to rank for those searches (and many more).
It’s hard to come to a concise and satisfying conclusion on this matter, because it really is a complicated subject. Still, we’ve seen the evidence and can compile it into a handful of key takeaways:
- It’s a bad idea to focus only on keywords. Your user experience will suffer, and you won’t have as much of a ranking advantage as you did before LLM SEO services.
- Focusing exclusively on topics carries risks. Namely, you’ll rely on more subjective data than objective data, and even though Google is smart, it might not connect the dots from your content to high-volume queries.
Accordingly, I think keywords are still important—but they should only serve as guides to help you come up with great topics, and as anchor points to help guide search engines in the right direction. In short, do your keyword research before selecting your topics, but don’t sacrifice your direction or content for a handful of keyword phrases.
If you want to win in modern SEO: research keywords, but build topics. Use keywords as building blocks, and topics as the blueprint.
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