social dancer vs raver

social dancer and raver both are nouns.

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

As nouns, raver is a hyponym of social dancer; that is, raver is a word with a more specific, narrower meaning than social dancer:

social dancer: a person who participates in a social gathering arranged for dancing (as a ball)
raver: a participant in a rave dancing party

Other hyponyms of social dancer include clog dancer, dancing partner, folk dancer, waltzer.

social dancer (noun)	raver (noun)
a person who participates in a social gathering arranged for dancing (as a ball)	someone who rants and raves; speaks in a violent or loud manner
	a participant in a rave dancing party