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.
Test !
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.