This document discusses the concept of communication and its elements. It defines communication as the exchange of information between individuals through symbols. The key elements of communication are the sender, message, channel, receiver, feedback, barriers/noise, context, and communication system. It also discusses the various means of communication including verbal, non-verbal, written, radio, television, telephone, and internet. Finally, it discusses the implications of communication for human beings, including how it facilitates spreading of knowledge and formation of relationships.