Communication is the exchange of information between individuals through common symbols, signs, or behaviors. It involves sending and receiving messages through speaking, writing, or nonverbal signals. Effective communication occurs when the message is understood as intended and allows for interaction between the sender and receiver for clarification. Barriers like language differences, personal issues, physical limitations, cultural factors, or organizational policies can cause misunderstandings if not addressed. Developing strong verbal, listening, questioning, nonverbal, and writing skills helps improve communication.