To live in this world, it is necessary to converse with the people around and fulfill their and ours need which is only possible when we communicate. Not everyone knows the sign language but everyone can express their thoughts and views through words & simply by saying it. Communication is a tool with which we exercise our influence on others, bring out changes in our and others’ attitudes, motivate the people around us and establish and maintain relationships with them. Communication makes a major part of our active life and is a social activity. This social activity is pursued verbally through speech, reading and writing or non-verbally through body language. Moreover we communicate to express our emotions like courage or fear, joy or sorrow, satisfaction or disappointment with appropriate gestures and words.
Though communication exists even among some species of animals, birds and insects, it is limited to certain noises like chirping and crying, or movements and is related to their instinctive needs like hunting, preying and mating. Human communication is more complex, varied and has several objectives. It is complex because of the use of language and is varied because it ranges from simple gestures or facial expressions to the most advanced e-mail technologies.