usurper vs disparagement

usurper and disparagement both are nouns.

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

usurper (noun)	disparagement (noun)
one who wrongfully or illegally seizes and holds the place of another	the act of speaking contemptuously of
	a communication that belittles somebody or something