mass murderer vs disparagement

mass murderer and disparagement both are nouns.

Word	Noun	Adjective	Verb	Adverb
mass murderer	Yes	No	No	No
disparagement	Yes	No	No	No

mass murderer (noun)	disparagement (noun)
a person who is responsible for the deaths of many victims in a single incident	the act of speaking contemptuously of
	a communication that belittles somebody or something