bunny hug vs ballroom dance

bunny hug and ballroom dance both are nouns.

Word	Noun	Adjective	Verb	Adverb
bunny hug	Yes	No	No	No
ballroom dance	Yes	No	No	No

As nouns, ballroom dance is a hypernym of bunny hug; that is, ballroom dance is a word with a broader meaning than bunny hug:

bunny hug: a syncopated ballroom dance formerly popular in the US
ballroom dance: any of a variety of social dances performed by couples in a ballroom

Other hypernyms of bunny hug include ballroom dancing.

bunny hug (noun)	ballroom dance (noun)
a syncopated ballroom dance formerly popular in the US	any of a variety of social dances performed by couples in a ballroom