This document discusses non-verbal communication. It defines non-verbal communication as the process of communicating through sending and receiving wordless messages. Some key forms of non-verbal communication mentioned include body language, facial expressions, gestures, eye contact, body shapes/postures, and the use of space. Body language is further broken down into types such as kinesics (body movements), proxemics (space), paralanguage (vocal qualities), and various cultural signals systems like sign language. Specific examples are provided for different facial expressions, gestures, and uses of space that convey meanings.