irritating vs disparagement

irritating is not a noun while disparagement is a noun.

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

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

irritating (adjective)	disparagement (adjective)
causing irritation or annoyance
(used of physical stimuli) serving to stimulate or excite
causing physical discomfort