revocation vs repeal

revocation and repeal both are nouns.

Word	Noun	Adjective	Verb	Adverb
revocation	Yes	No	No	No
repeal	Yes	No	Yes	No

As nouns, repeal is a hypernym of revocation; that is, repeal is a word with a broader meaning than revocation:

revocation: the act (by someone having the authority) of annulling something previously done
repeal: the act of abrogating; an official or legal cancellation

Other hypernyms of revocation include abrogation, annulment.

revocation (noun)	repeal (noun)
the act (by someone having the authority) of annulling something previously done	the act of abrogating; an official or legal cancellation
the state of being cancelled or annulled

revocation (verb)	repeal (verb)
	cancel officially