tap dancing vs hoofing

tap dancing and hoofing both are nouns.

Word	Noun	Adjective	Verb	Adverb
tap dancing	Yes	No	No	No
hoofing	Yes	No	No	No

As nouns, hoofing is a hypernym of tap dancing; that is, hoofing is a word with a broader meaning than tap dancing:

tap dancing: a dance step tapped out audibly with the feet
hoofing: dancing in which the steps are more important than gestures or postures

Other hypernyms of tap dancing include step dancing.

tap dancing (noun)	hoofing (noun)
a dance step tapped out audibly with the feet	dancing in which the steps are more important than gestures or postures