flooring vs dance floor

flooring and dance floor both are nouns.

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

As nouns, dance floor is a hyponym of flooring; that is, dance floor is a word with a more specific, narrower meaning than flooring:

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

Other hyponyms of flooring include bell deck, floorboard, parquet, parquet floor, truck bed.

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