Communication is the meaningful exchange of information between people. It involves transmitting ideas, thoughts, and attitudes through various means such as spoken words, written words, visual images, and body language. The key aspects of communication include encoding thoughts and feelings, transmitting the message through verbal or written channels, decoding and understanding the message, and providing feedback. Barriers to effective communication can occur due to noise, the communication medium, emotions, language differences, poor listening skills, and distractions. The document provides tips for becoming an active listener and using non-verbal cues like eye contact and gestures to improve communication.