Lexical semantics is a subfield of linguistics that studies the meaning of words and their relationships within a language. It focuses on how words convey meaning, how they relate to each other, and how context influences their interpretation. This area of study examines concepts like synonyms, antonyms, and polysemy, which is when a single word has multiple meanings. Understanding lexical semantics helps linguists and language learners grasp how language functions. It also plays a crucial role in fields like natural language processing, where computers analyze and understand human language. By exploring word meanings and relationships, researchers can improve communication and language technology.