Nonverbal communication is a form of communication that does not involve the use of words. It includes LANGUAGE, signing, MANNERISMS, body LANGUAGE, and sign LANGUAGE. LANGUAGE is the use of words to communicate, while signing is the use of hand gestures to convey meaning. MANNERISMS are subtle behaviors that can be used to express emotions or attitudes. Body LANGUAGE is the use of physical movements to communicate, such as facial expressions, posture, and gestures. Sign LANGUAGE is a system of communication that uses hand shapes, facial expressions, and body LANGUAGE to convey meaning.