social dancer vs worker

social dancer and worker both are nouns.

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

As nouns, worker is a hypernym of social dancer; that is, worker 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)
worker: a person who acts and gets things done

Other hypernyms of social dancer include actor, doer.

social dancer (noun)	worker (noun)
a person who participates in a social gathering arranged for dancing (as a ball)	sterile member of a colony of social insects that forages for food and cares for the larvae
	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done