revoke vs revocation

revoke and revocation both are nouns.

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

revoke (noun)	revocation (noun)
the mistake of not following suit when able to do so	the act (by someone having the authority) of annulling something previously done
	the state of being cancelled or annulled

revoke (verb)	revocation (verb)
cancel officially
fail to follow suit when able and required to do so