This document discusses semantics, which is the study of meaning in language. It defines semantics as the analysis of meaning of words, phrases, and sentences. It then discusses different types of meaning, including conceptual meaning, which refers to the linguistic function of a word, and associative meaning, which deals with additional concepts linked to words. The document also covers semantic features, roles, and lexical relations that provide meaning, such as synonymy, antonymy, hyponymy, and polysemy.