The document discusses discourse analysis and related linguistic concepts. It defines discourse as language above the sentence level, including stretches of spoken language that are coherent and meaningful. It describes two approaches to analyzing discourse: structural, which looks at grammatical relationships between units, and functional, which examines how language performs different social functions. Recent approaches view discourse as a social practice shaped by and having implications for social structures. The document also discusses speech act theory, which proposes that utterances in dialogue perform actions, such as asking a question or making a promise.