A gesture is a form of non-verbal communication made with a part of the body, used instead of or in combination with verbal communication.
Most people use gestures and body language in addition to words when they speak; some ethnic groups and languages use them more than others do, and the amount of such gesturing that is considered culturally acceptable varies from one location to the next.
Handgestures, i.e., gestures performed by one or two hands, is the most numerous category of gestures due to the ability of the human hand to acquire a huge number of clearly discernible configurations, the fact of importance for the signlanguages.
