Keyword Clustering
In one line
Keyword clustering is the practice of grouping keywords with the same intent so they map onto a single page or topic cluster — used to prevent cannibalization and to build topical authority.
Going deeper
If you build content straight from a flat keyword list, you end up with five near-identical pages competing with each other. Clustering pre-empts that by grouping same-intent keywords onto a single page.
A common method is SERP similarity clustering: if two keywords share enough of their top-10 results, they belong on the same page; if they barely overlap, they get separate pages. Most automated cluster tools wrap that logic.
Clustering also feeds topical authority for GEO. LLMs pick up on how deeply and consistently a domain covers a topic, so a well-built cluster raises the odds of being chosen as a citation source.
Related terms
Keyword Research
Keyword research is the practice of finding and organising the words and questions your target audience actually types into search — the starting point of any SEO or GEO content plan.
SEOTopical Authority
Topical authority is the credit a domain earns when search engines decide it covers an entire subject area deeply and consistently — not just one or two posts.
SEOContent Cluster / Pillar Page
A content cluster is a structure where a pillar page covers a broad topic and supporting cluster posts answer its sub-questions, all tied together with internal links.
SEOKeyword Cannibalization
Keyword cannibalization happens when multiple pages on the same site target the same query and end up competing with each other, dragging all of their rankings down.
SEOSearch Intent
Search intent is the underlying goal behind a query — typically grouped as informational, navigational, commercial or transactional — and matching it is what separates pages that rank from pages that don't.