Dance (from French anser, perhaps from Frankish) is an art form that generally refers to movement of the body, usually rhythmic and to music, used as a form of expression, social interaction or presented in a spiritual or performance setting. Dance is also used to describe methods of non-verbal communication (see body language) between humans or animals (bee dance, patterns of behaviour such as a mating dance), motion in inanimate objects (the leaves danced in the wind), and certain musical forms or genres. In sports, gymnastics, figure skating and synchronized swimming are dance disciplines while martial arts kata are often compared to dances.