Pragmatics's a subfield of linguistics which studies the ways in which context contributes to meaning. Pragmatics encompasses speech act theory, conversational implicature, talk in interaction and other approaches to language behavior in philosophy, sociology, and linguistics. It studies how the transmission of meaning depends not only on the linguistic knowledge (for example grammar, lexicon etc.) of the speaker and listener, but also on the context of the utterance, knowledge about the status… (More on Pragmatics)