This document discusses the difference between perception and communication and how they affect each other. It defines communication as conveying information between people to create understanding, and perception as how people interpret sensory information to form views of the world. Communication and perception are interrelated - a message can be perceived differently depending on factors like culture, environment, and self-perception. The document also describes different types of perception like self-perception, learned perception, environmental perception, cultural perception, and physical perception. Finally, it discusses how perception affects communication, as people perceive things differently, and the role of communication is to convey messages to build desired perceptions.