A word family is like a group of words that are related to each other. They are like a family because they have the same root or base word.
For example, the word "cook" is the base word in the word family. Other words that belong to this family are cooker, cooking, cooked, and cookery. They are all related to the base word "cook."
So, if you know the base word, you can usually figure out the meaning of the other words in word family.
These families are helpful when you want to expand your vocabulary and understand word meanings better. Plus, they're pretty fun to explore!