Communication is the sharing of information between two or more parties. It involves an encoder, a message, a medium to convey the message, a receiver to decode the message, and potential feedback. Effective communication requires clarity, completeness, conciseness, consideration, courtesy, correctness, and coherence. Barriers to communication can be physical, psychological, related to semantics, or organizational. Managers must be skilled at both sending and receiving messages to communicate effectively within an organization.