revising vs revisal

revising and revisal both are nouns.

Word	Noun	Adjective	Verb	Adverb
revising	Yes	No	No	No
revisal	Yes	No	No	No

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

Other hyponyms of revising include rescript, revise, revision, recasting, rephrasing, rewording.

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