derogation vs piranha

derogation and piranha both are nouns.

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

derogation (noun)	piranha (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	small voraciously carnivorous freshwater fishes of South America that attack and destroy living animals
a communication that belittles somebody or something	someone who attacks in search of booty