This document defines communication as the exchange of meanings between individuals through a common system of symbols. It then discusses the different types of communication, including spoken/verbal, non-verbal, and written communication. Spoken communication includes face-to-face, telephone, radio, and television interactions. Non-verbal communication involves body language, gestures, appearance, and tone of voice. Written communication has expanded greatly with the internet and social media. The document also notes that graphs and visualizations are forms of visual communication. Finally, it states that communication is important as the foundation for collaboration in an organization, allows for coordination and decision-making, and improves management abilities.