This document discusses language registers and provides examples of how language varies based on social context. It defines register as variations in language conditioned by uses rather than users, involving consideration of the situation, purpose, participants, and message content. Five common language registers are identified - frozen, formal, consultative, casual, and intimate - and examples are given of greetings, requests, encouragement, and partings in each register. Understanding language registers helps decide which level of formality is appropriate for different audiences and situations.