Google uses a feature called word stemming that allows all forms of the word - singular, plural, verb form as well as similar words to be returned for a given search query.
So if someone types in "house plans", not only the pages that are optimized for that phrase but the pages that contain all variations of that phrase are returned. For example, "house plan", "house planning", "house planner".Hope you have some understanding on keywords and you also know how to identify them and where to use them. The next chapter explains how to optimize metatags for better results.

word stemming is The search results returned would be having the word " Beauty" in it. or you can say that it adding prefix, suffix in the keyword. Stemming algorithm reduces the words "SEO in India", "SEO India", and "search engine optimization in India" to the root word, "India SEO"

Generate new words as prefix and suffix

Adding a prefix to the word
Example:- Adding "un" to the word "necessary"  makes it "unnecessary".

Adding a suffix to the word
Example:- Adding "ful" to the word "use"   makes it "useful".

Word stemming in SEO means cutting down a word to its stem without making any significant changes to the meaning. This is used by search engines by to find the relationship between the particular word and the subject of the document. For example 'fishing' becomes 'fish' 'surprising' becomes 'surpris' and definitely becomes 'definit', it is used to make calculations by the search engine.