malapropism vs misstatement

malapropism and misstatement both are nouns.

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

As nouns, misstatement is a hypernym of malapropism; that is, misstatement is a word with a broader meaning than malapropism:

malapropism: the unintentional misuse of a word by confusion with one that sounds similar
misstatement: a statement that contains a mistake

malapropism (noun)	misstatement (noun)
the unintentional misuse of a word by confusion with one that sounds similar	a statement that contains a mistake