This document defines communication and outlines its key elements and types. It describes the communication process, which involves a sender, message, channel, receiver, feedback, context, and environment. It also lists several potential barriers to effective communication, including physical conditions, use of jargon, lack of attention, perceptual differences, physical and emotional barriers, language and cultural differences, and information overload. The document aims to help students understand communication and potential issues that can interfere with the transmission of intended meanings.