This document defines and provides examples of appositives and appositive phrases. It explains that appositives are nouns or pronouns placed after another noun or pronoun to identify, rename, or explain the preceding word. Appositive phrases add additional information about a noun using modifiers. Commas are used to set off appositives and appositive phrases from the rest of the sentence. The document also distinguishes appositives from prepositional phrases and provides examples from literature.