Relative Pronoun

A relative pronoun is one, which is used to refer to nouns mentioned previously, whether they are people, places, things, animals, or ideas. Relative pronouns can be used to join two sentences.

There are only a few relative pronouns in the English language. The most common are which, that, whose, whoever, whomever, who, and whom. In some situations, the words what, when, and where can also function as relative pronouns.

Examples: The cyclist who won the race trained hard. The pants that I bought yesterday are already stained.