A dance is created through a series of movement. Any movement can be construed as a dance. For example, cars weaving in and out of traffic, walking through a crowded sidewalk, etc. Concert dance is different and special in the respect that the movements are done with the intention of moving as opposed to a necessity. It is also common to see a difference between the spectator and the performer within the concert dance context. On the other hand, social dance is a series of moving for the enjoyment of oneself with others. It is a participatory form that often blurs the line between spectator and participant.
– Alaine Handa
http://www.alainehanda.com/