Communication (from Latin commūnicāre, meaning “to share”) is the activity of conveying information through the exchange of thoughts, messages, or information, as by speech, visuals, signals, writing, or behavior. It is the meaningful exchange of information between two or more living creatures. One definition of communication is “any act by which one person gives to or receives from person information about that person′s needs, desires, perceptions, knowledge, or affective states. Communication may be intentional or unintentional, may involve conventional or unconventional signals, may take linguistic or non–linguistic forms, and may occur through spoken or other modes. 1. ” Communication is transfer of information from one person to another, whether or not it elicits confidence. But the information transferred meet be understandable to the receiver � G.G. Brown. 2. “Communication is the intercourse by words, letters or messages”– Fred G. Meyer. Communication requires a sender, a message,and a recipient, although the receiver does not have to be present or aware of the sender′s intent to communicate at the time of communication; thwe communication can occur across vast distances in time and space. Communication requires that the communicating parties share an area of communicative commonality. The communication process is complete once the receiver understands thesender′s message.