disapprove vs disapproval

disapprove is not a noun while disapproval is a noun.

Word	Noun	Adjective	Verb	Adverb
disapprove	No	No	Yes	No
disapproval	Yes	No	No	No

disapprove (noun)	disapproval (noun)
	the act of disapproving or condemning
	an inclination to withhold approval from some person or group
	the expression of disapproval
	a feeling of disliking something or what someone is doing

disapprove (verb)	disapproval (verb)
consider bad or wrong
deem wrong or inappropriate