This document defines communication and describes its process and types, including verbal and nonverbal communication. It also discusses different levels of communication, potential barriers, and tools for effective communication. Specifically, it defines communication as the exchange of information, ideas, thoughts, and emotions through speech, signals, writing or behavior. It also outlines five levels of communication: intrapersonal, interpersonal, small group, one-to-group, and mass communication. Finally, it provides tips for overcoming barriers and enhancing communication skills, such as being clear, concise, consistent, and validating assumptions.