An adjacency pair is composed of two utterances by two speakers, one after the other. The speaking of the first utterance (the first-pair part, or the first turn) provokes a responding utterance (the second-pair part, or the second turn). Adjacency pairs are a component of pragmatic variation in the study of linguistics, and are considered primarily to be evident in the "interactional" function of pragmatics.
An adjacency pair consists of two verbal exchanges between two people, one immediately following the other. The initial statement (first turn) elicits a reply (second turn), which is a fundamental concept in linguistics research, especially within the scope of communicative functions.