firebrand vs disparagement

firebrand and disparagement both are nouns.

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

firebrand (noun)	disparagement (noun)
someone who deliberately foments trouble	the act of speaking contemptuously of
a piece of wood that has been burned or is burning	a communication that belittles somebody or something