This document defines communication as the process of transmitting and receiving verbal and non-verbal messages to express ideas, thoughts, feelings, or emotions. It discusses the purposes of communication, including expressing thoughts/feelings and enhancing understanding. The document outlines the process of communication, including the components of context, sender, encoding, message, medium, receiver, decoding, feedback, and noise. It also describes the differences between oral and written messages and discusses non-verbal communication and cues. Finally, it outlines the seven C's of effective communication: completeness, correctness, conciseness, concreteness, consideration, clarity, and courtesy.