knucklehead vs disparagement

knucklehead and disparagement both are nouns.

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

knucklehead (noun)	disparagement (noun)
a stupid person; these words are used to express a low opinion of someone's intelligence	the act of speaking contemptuously of
	a communication that belittles somebody or something