Head movement is a type of body language that can be used to communicate a variety of emotions and messages. It includes three distinct motions: nodding, tossing, and bobbing. Nodding is a simple up-and-down motion of the head, usually used to indicate agreement or understanding. Tossing is a more vigorous side-to-side motion of the head, often used to express disbelief or disagreement. Bobbing is a quick, jerky movement of the head, usually used to show excitement or enthusiasm. All three of these motions are important components of head movement and can be used to convey a range of emotions and messages.