A ball is a formal dance. The word 'ball' is derived from the Latin word "ballare", meaning 'to dance'; the term also derived into "bailar", which is the Spanish and Portuguese word for dance (verb). In Catalan it is the same word, 'ball', for the dance event.
Attendees wear evening attire, which is specified on the invitation as black tie or white tie (the most formal). Social dance forms a large part of the evening; actual ballroom dancing may or may not occur.
Ball dancing is great fun. the Foxtrot, Waltz, great music and gets you close to your partner, If you don't want to be close to your partner, go do the Moonwalk