ballroom music vs danceroom music

ballroom music and danceroom music both are nouns.

Word	Noun	Adjective	Verb	Adverb
ballroom music	Yes	No	No	No
danceroom music	Yes	No	No	No

As nouns, ballroom music and danceroom music are synonyms defined as:

ballroom music and danceroom music: a genre of popular music composed for ballroom dancing

Other synonyms of ballroom music include dance music.

ballroom music (noun)	danceroom music (noun)
a genre of popular music composed for ballroom dancing	a genre of popular music composed for ballroom dancing