Which type of pronoun is used to show the connection between the antecedent and the subordinate clause of a sentence?

A relative pronoun introduces a subordinate clause that gives information about the antecedent. The subordinate clause is called a relative clause because it provides information that 'relates' to the antecedent.

The relative pronouns are: who, whom, whose, which, that.

Example: The man who lives next door gave me flowers from his garden.