This document discusses various aspects of communication including definitions, the communication process, types of communication, flows of communication, and technical communication. It defines communication as the exchange of information between a sender and receiver through symbols. The types of communication discussed include intrapersonal, interpersonal, organizational, and mass communication. Organizational communication can be internal/external and operational/personal. Technical communication includes both oral forms like presentations and meetings as well as written forms like memos, reports, and manuals.