disparagement vs blunderer

disparagement and blunderer both are nouns.

Word	Noun	Adjective	Verb	Adverb
disparagement	Yes	No	No	No
blunderer	Yes	No	No	No

disparagement (noun)	blunderer (noun)
the act of speaking contemptuously of	someone who makes mistakes because of incompetence
a communication that belittles somebody or something