Semantics is the study of meaning in language. It examines how meaning is constructed and interpreted through language use. Semantics is interested in how meaning works in individual words and sentences, relationships between words, ambiguity, and different interpretations of meaning. Precisely defining meaning is important, and semantics defines it as both the thing referred to in the world and the mental concepts evoked. There are different types of meaning studied in semantics, including linguistic meaning involving sense and reference, social meaning involving social characteristics inferred from language, and affective meaning involving emotional connotations of words.