rewriting vs revise

rewriting and revise both are nouns.

Word	Noun	Adjective	Verb	Adverb
rewriting	Yes	No	No	No
revise	Yes	No	Yes	No

As nouns, revise is a hyponym of rewriting; that is, revise is a word with a more specific, narrower meaning than rewriting:

Other hyponyms of rewriting include rescript, revisal, revision, recasting, rephrasing, rewording.

rewriting (noun)	revise (noun)
editing that involves writing something again	the act of rewriting something

rewriting (verb)	revise (verb)
	make revisions in
	revise or reorganize, especially for the purpose of updating and improving