Communicate nonverbally is a way of expressing oneself without using words. It can include body language, facial expressions, and gestures. SIGN language is one of the most common forms of nonverbal communication, which uses hand gestures and symbols to convey meaning. SIGN language is used by people who are deaf or hard of hearing, as well as those who cannot speak. It is also used in many other contexts, such as in international relations, to bridge language barriers.