This document discusses the different functions of communication, which include regulation/control, social interaction, motivation, emotional expression, and information. Regulation/control involves using language to control behavior or regulate activities, such as giving orders or instructions. Social interaction refers to using language to socialize and interact with others through greetings, invitations, and other exchanges. Motivation involves expressing desires, wants, likes/dislikes, and aspirations. Emotional expression is conveying emotions like love, joy, fear, or anger. Finally, information involves giving and receiving facts and statements to share or request information. Nonverbal cues also play an important role in communicating these functions.