What term is used for the practice of using proper language based on social context, often involving greetings?

The practice of using proper language based on social context is best described by the term "pragmatics." Pragmatics encompasses the rules and conventions for using language effectively in varying social situations, including how greetings, responses, and other communicative acts are shaped by the context in which they occur. This includes understanding not just the literal meaning of words, but also the social implications behind them, which can vary widely depending on factors like culture, relationship, and setting.

For instance, the way one greets a friend versus a formal acquaintance can reflect the nuances of pragmatics, as it takes into account the situational expectations and social norms. This differs from grammar, which refers to the structural rules of a language; syntax, which focuses on the arrangement of words in sentences; and semantics, which deals with the meaning of words and phrases in isolation rather than their use in context. Understanding pragmatics is crucial for effective communication, as it allows individuals to navigate social interactions smoothly and appropriately.