jeanie,
There are still people who differentiate between a dance and a social.
Our Edinburgh based university group has a weekly social evening, which is very much jeans and t-shirts, off down the pub afterwards, and proper dances, with full highland dress, proper food, and a party afterwards, as well as plenty in between.
   And there's plenty of dances, both known and unknow, and newly devised.

Bunnahabhain