malapropism vs malaprop

malapropism and malaprop both are nouns.

Word	Noun	Adjective	Verb	Adverb
malapropism	Yes	No	No	No
malaprop	Yes	No	No	No

As nouns, malapropism and malaprop are synonyms defined as:

malapropism and malaprop: the unintentional misuse of a word by confusion with one that sounds similar

malapropism (noun)	malaprop (noun)
the unintentional misuse of a word by confusion with one that sounds similar	the unintentional misuse of a word by confusion with one that sounds similar