misapply vs misuse

misapply is not a noun while misuse is a noun.

Word	Noun	Adjective	Verb	Adverb
misapply	No	No	Yes	No
misuse	Yes	No	Yes	No

As verbs, misapply and misuse are synonyms defined as:

misapply and misuse: apply to a wrong thing or person; apply badly or incorrectly

misapply (noun)	misuse (noun)
	improper or excessive use

misapply (verb)	misuse (verb)
apply to a wrong thing or person; apply badly or incorrectly	change the inherent purpose or function of something
	apply to a wrong thing or person; apply badly or incorrectly