What is keyword stemming?

[ssraj]

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.
for an instance, If you took the word “search” and made additional keywords out of words such as “searcher,” “searches,” “searching,” “searched,” and “searchable.” Using keyword stemming on the word “search” would bring in hits for each of the stemmed keywords when they are searched for in an engine.