This document discusses communication processes, principles, and ethics. It defines communication as the sending and receiving of verbal and nonverbal messages between people. Purposive communication is intentional communication that occurs within specific contexts like environment, social relationships, culture, and place/time. The key elements of communication are the sender, message, channels, and receiver. Effective communication applies principles like courtesy, clarity, conciseness, concreteness, and completeness. The goal is to communicate skillfully and ethically within different contexts.