disparagement vs cowardly

disparagement is a noun but cowardly is not a noun.

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

disparagement (noun)	cowardly (noun)
the act of speaking contemptuously of
a communication that belittles somebody or something

disparagement (adjective)	cowardly (adjective)
	lacking courage; ignobly timid and faint-hearted