disparagement vs instigator

disparagement and instigator both are nouns.

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

disparagement (noun)	instigator (noun)
the act of speaking contemptuously of	a person who initiates a course of action
a communication that belittles somebody or something	someone who deliberately foments trouble