This document defines communication and discusses its nature and scope. Communication is defined as the exchange of ideas, views, facts, and feelings between two or more people to reach a common understanding. It can be formal or informal. The document also provides definitions of communication from various authors. It discusses how communication is important in different fields like personal life, social life, management, law, and is closely related to every sphere of human life. Effective communication helps complete work efficiently and overcome barriers. In business, communication leads to interactive sessions at all levels of hierarchy, increased productivity, and goal achievement.