This document defines and provides examples of morphemes, which are the smallest units of meaning in a language. It distinguishes between bound morphemes, which cannot stand alone as words and are attached to free morphemes, and free morphemes, which can stand alone as words. Examples of bound morphemes include prefixes, suffixes, and inflectional endings. The document also categorizes and provides many examples of different types of prefixes and suffixes, as well as inflectional suffixes and how they change the grammatical function of words.