What do you mean by the term Keyword Stemming and how it is beneficial for SEO?

Stemming or keyword stemming refers to Google's ability to understand different word forms of a specific search query.

Keyword stemming is a useful tool for web pages and search engine optimization. The process of keyword stemming involves taking a basic but popular keyword pertaining to a particular website and adding a prefix, suffix, or pluralization to make the keyword into a new word.