This document discusses various aspects of communication including definitions, elements, functions, forms, models, and importance. It provides definitions of communication as the exchange of information between people using symbols. The key elements of communication are identified as the sender, message, encoding, media, decoding, receiver, feedback, and noise. Forms of communication described include intrapersonal, interpersonal, small group, public, and mass communication. Models covered are the linear, interactive, and transactional models. The functions and importance of effective communication to organizations are also outlined.