Discourse analysis is the study of language use beyond the sentence level. It examines how stretches of language take on meaning and coherence for communication. There are structural and functional definitions of discourse. Structurally, discourse is a linguistic unit above the sentence, while functionally it is a particular use of language. Historically, discourse analysis originated in classical rhetoric and linguistics over 2000 years ago, but emerged as a modern discipline in the 1960s-1970s across various fields including linguistics, sociolinguistics, psychology, and anthropology. It draws from theories such as speech act theory, sociolinguistics, and the study of language variation.