loony vs derogation

loony and derogation both are nouns.

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

loony (noun)	derogation (noun)
someone deranged and possibly dangerous	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
	a communication that belittles somebody or something

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