The document discusses the basic principles of communication including definitions of communication from various scholars. It describes communication as a two-way process of exchanging information between people to create common understanding. The document also outlines characteristics of communication such as it being unavoidable, involving a sender and receiver, and being successful when meaning is understood. Barriers to effective communication are then discussed including environmental, individual, organizational, and linguistic barriers. Finally, the importance of communication in the workplace is mentioned as creating awareness, better relationships, problem-solving, and improved performance.