Keyword

A keyword is a word or phrase that represents what people search for, used to guide both SEO content and paid search targeting.

In SEO, a "keyword" is really shorthand for a cluster of related phrases and questions with similar intent — modern search engines match content to meaning and intent, not to exact string matches, so writing for one rigid keyword phrase and ignoring its close variants is an outdated approach that underperforms writing to cover the full topic naturally.