cancel vs revoke

cancel and revoke both are nouns.

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

As verbs, revoke is a hyponym of cancel; that is, revoke is a word with a more specific, narrower meaning than cancel:

cancel (noun)	revoke (noun)
a notation cancelling a previous sharp or flat	the mistake of not following suit when able to do so

cancel (verb)	revoke (verb)
make invalid for use	cancel officially
remove or make invisible	fail to follow suit when able and required to do so
declare null and void; make ineffective
postpone indefinitely or annul something that was scheduled
make up for