social dancer vs doer

social dancer and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
social dancer	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of social dancer; that is, doer is a word with a broader meaning than social dancer:

social dancer: a person who participates in a social gathering arranged for dancing (as a ball)
doer: a person who acts and gets things done

Other hypernyms of social dancer include actor, worker.

social dancer (noun)	doer (noun)
a person who participates in a social gathering arranged for dancing (as a ball)	a person who acts and gets things done