Body language is a form of nonverbal communication that involves the use of physical gestures, facial expressions, and posture to convey messages. It is an important part of communication, as it can be used to express emotions, intentions, and feelings without the use of words. The term 'body language' is derived from the Greek word 'ANATOMY, ' which means 'structure of the body.' Body language can be used to interpret the thoughts and feelings of another person, and it can also be used to influence the behavior of others.