criticism vs disapproval

criticism and disapproval both are nouns.

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

As nouns, disapproval is a hypernym of criticism; that is, disapproval is a word with a broader meaning than criticism:

criticism (noun)	disapproval (noun)
a serious examination and judgment of something	the act of disapproving or condemning
disapproval expressed by pointing out faults or shortcomings	an inclination to withhold approval from some person or group
a written evaluation of a work of literature	the expression of disapproval
	a feeling of disliking something or what someone is doing