bunny hug vs ballroom dancing

bunny hug and ballroom dancing both are nouns.

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

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

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

Other hypernyms of bunny hug include ballroom dance.

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