derogation vs loony

derogation and loony both are nouns.

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

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

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