loony vs disparagement

loony and disparagement both are nouns.

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

loony (noun)	disparagement (noun)
someone deranged and possibly dangerous	the act of speaking contemptuously of
	a communication that belittles somebody or something

loony (adjective)	disparagement (adjective)
informal or slang terms for mentally irregular