The category or type of cummunication that includes tone of voice, appearance, body language and facial expression is the non-verbal one. Nonverbal communication provides the reciever with much more information about the speaker than verbal communication does. For example, we can tell the speaker's sarcasm, deception, genuineness, happiness, aggressiveness, etc. through facial expressions, hand gestures, posture, appearance, clothes. Somebody standing up straight and speaking clearly, making gestures both with hands, face and the body itself joining the message he or she wants to send, may appear more serious or knowledgeable than somebody wearing wrinkled clothes, having a poor posture, and not making any gestures; since these characteristics would communicate a lack of confidence or expertise.
