What do appostive mean?

An appositive is a noun or noun phrase that renames or provides additional information about another noun directly beside it. It typically follows the noun it modifies and is often set off by commas. For example, in the sentence "My brother, a skilled musician, plays the guitar," "a skilled musician" is the appositive that gives more detail about "my brother." Appositives help clarify or add context to the subject being discussed.