dance floor vs flooring

dance floor and flooring both are nouns.

Word	Noun	Adjective	Verb	Adverb
dance floor	Yes	No	No	No
flooring	Yes	No	No	No

As nouns, flooring is a hypernym of dance floor; that is, flooring is a word with a broader meaning than dance floor:

dance floor: a bare floor polished for dancing; any space or surface designated for dancing
flooring: the inside lower horizontal surface (as of a room, hallway, tent, or other structure)

Other hypernyms of dance floor include floor.

dance floor (noun)	flooring (noun)
a bare floor polished for dancing; any space or surface designated for dancing	the inside lower horizontal surface (as of a room, hallway, tent, or other structure)
	building material used in laying floors