Word structure refers to the way words are formed and organized in a language. It includes the study of morphemes, which are the smallest units of meaning, such as prefixes, suffixes, and root words. Understanding word structure helps in decoding unfamiliar words and enhances vocabulary. In addition to morphemes, word structure also involves syntax, which is the arrangement of words in sentences. This arrangement affects meaning and clarity. By analyzing word structure, linguists can better understand how languages function and evolve over time, contributing to fields like linguistics and language education.