This document provides an overview of communication, including definitions, types, elements, and functions. It begins with defining communication as the exchange of ideas and information between two or more people. The key elements of communication identified are the source, message, symbol, channel, encoding, decoding, receiver, and feedback. Communication is classified based on channels (verbal, nonverbal), purpose and style (formal, informal), receivers (intrapersonal, interpersonal, group, mass), and context (internal, external). The functions of communication discussed include social interaction, sharing experiences, and ensuring messages are understood.