Communication does not mean merely written .or oral messages. It includes everything that may be used to convey meaning from one person to another, e.g., movement of lips or the wink of an eye or the wave of hands may convey more meaning than written or oral words. Expression through body parts is known as gestural or non-verbal communication. It includes facial expression, movement of lips, wink of an eye, nodding of heads, movement of hands, a sense of humour or a mere silence, etc.
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