Cornerstone Content
In one line
Cornerstone content is the small set of pages your site relies on most for traffic, conversions and citations — the load-bearing columns of the content house.
Going deeper
Cornerstone content is a term Yoast popularised: the 5 to 10 pages your site depends on more than any others. Usually it covers the main category pages, the bestsellers and the flagship guide content. Newer posts should consistently funnel internal links into these cornerstones.
It overlaps with the pillar-page idea but the framing is different. A pillar is the hub of a specific topic cluster; a cornerstone is a site-wide priority marker. A single page can be both, and in practice that is exactly how teams treat it.
The whole discipline is in the maintenance loop, not the launch. When stats, screenshots, regulations or tool names change, cornerstones are the first pages you update — their freshness sets the perceived E-E-A-T of the entire site.
Related terms
Pillar Page
A pillar page is the hub at the centre of a topic cluster — a broad page on a large theme that interlinks with the narrower cluster pages around it.
SEOEvergreen Content
Evergreen content is content that keeps earning search demand and value long after it goes live — pieces whose relevance comes from fundamentals, not from the news cycle.
SEOE-E-A-T
E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) is Google's four-axis lens for content quality — and the same kinds of signals matter when LLMs decide whom to cite.
SEOPrimary Keyword
The primary keyword is the single search term a page is built around — the one that the title, H1 and meta description should all consistently point to.
GEO·AEOGEO
GEO (Generative Engine Optimization) is the practice of optimizing content and data so that a brand gets cited and recommended inside generative AI search answers like ChatGPT, Perplexity and Google AI Overviews.
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