revocation vs abrogation

revocation and abrogation both are nouns.

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

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

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

Other hypernyms of revocation include annulment, repeal.

revocation (noun)	abrogation (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