Keyword Cannibalization

Keyword cannibalization happens when several pages on the same website compete for the same keyword and the same search intent. The pages eat into each other: Google cannot settle which one is the right result to show, so the URLs tend to take turns ranking without any of them gaining real ground.

The problem grows over time rather than arriving at once. After years of content production a site can hold three blog posts, a guide and a category page all covering the same subject. Signals get spread thin, backlinks land on five different URLs instead of one strong page, and internal links pull in separate directions. It is one of the more common self-inflicted problems in SEO.

Two pages on one subject only cannibalize if they answer the same intent. A product page and a guide coexist perfectly well, because one addresses people who want to buy and the other people who want to understand. That distinction is the whole boundary of the term.

The classic symptom is a ranking URL that changes from week to week. In Google Search Console it shows up as several URLs picking up impressions on the same keyword. Two resolutions are standard: the overlapping pages get consolidated into one with the old URLs redirected, or they get rewritten so each covers its own intent. Mapping keywords and intent to pages in the first place is what the guide to keyword research is for.