This document defines morphology as the branch of linguistics that studies the structure of words. It discusses what constitutes a word and describes morphemes as the smallest meaningful elements that make up words. There are two main types of morphemes: free morphemes that can stand alone as words, and bound morphemes that must be attached to other morphemes. The document also describes the components of words, such as roots, affixes, bases, and the four types of affixes: prefix, suffix, infix, and circumfix. Finally, it outlines the two main fields in morphology: inflectional morphology, which studies how words vary grammatically, and derivational morphology, which studies how words