Non verbal communication entails communicating by sending and receiving wordless messages. They usually reinforce verbal communication, though it can also stand alone and convey messages on its own.
Physical non verbal communication, or body language, includes facial expressions, eye contact, body posture, gestures such as a wave, pointed finger and the like, overall body movements, tone of voice, touch, and others. Facial expressions are the most common among all nonverbal communication. For instance, a smile or a frown conveys distinct emotions hard to express through verbal communication. Research estimates that body language, including facial expressions, account for 55 percent of all communication.