The document discusses different types and methods of communication. It categorizes communication based on organizational structure, direction of information flow, and media used. Formal communication follows official channels laid out in an organization's structure, while informal "grapevine" communication occurs outside formal networks through interpersonal relationships. Some key differences between formal and informal communication are that formal is based on position and slow, while informal is faster but prone to distortion and leaks confidential information. Methods of each type are also outlined.