Keyword research glossary

Plain definitions of the keyword research and SEO terms you’ll run into.

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Plain definitions of the keyword research and SEO terms you’ll run into.

Search intent

The goal behind a search — what the person actually wants to find or do when they type a query.

Long-tail keyword

A longer, more specific search phrase with lower volume but clearer intent and less competition.

Keyword difficulty

A score (usually 0–100) estimating how hard it is to rank on page one for a given search term.

Search volume

The average number of times a search term is queried in a given period, usually shown per month.

SERP

The search engine results page — the list of results, ads, and features Google shows for a query.

Keyword clustering

Grouping related search terms that share intent so one page can target many of them at once.

Seed keyword

A short, broad starting term you feed into a tool to generate hundreds of related search ideas.

Branded vs non-branded keywords

Branded terms include a company or product name; non-branded terms describe a need without one.

CPC (cost per click)

The average amount advertisers pay for one click on a keyword — a useful proxy for commercial value.

Keyword cannibalization

When two or more of your pages compete for the same search term, splitting their ranking signals.

Generative engine optimization (GEO)

Optimizing content so it gets cited in AI-generated search answers, not just ranked in the blue links.

Answer engine optimization (AEO)

Optimizing content to be the direct answer an AI or answer engine returns to a question.

AI Overviews

Google’s AI-generated answer shown above the regular results for many searches.

Large language model (LLM)

The AI model behind tools like ChatGPT that generates text — and, increasingly, search answers.

llms.txt

A proposed plain-text file that points AI crawlers at the pages on your site that matter most.