revocation vs revoke

revocation and revoke both are nouns.

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

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

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