Communication is the exchange of ideas, facts, opinions or emotions to create mutual understanding. The communication process involves a sender encoding and transmitting a message through a channel to a receiver who decodes it. Barriers to effective communication include physical barriers, psychological barriers like tuning out opposing ideas, language problems, and nonverbal distractions. Communication can be improved by providing feedback, avoiding grandstanding, and using appropriate channels of communication like downward, upward, horizontal, and diagonal channels as well as formal and informal networks.