buster vs derogation

buster and derogation both are nouns.

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

buster (noun)	derogation (noun)
a person (or thing) that breaks up or overpowers something	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
a person who breaks horses	a communication that belittles somebody or something
a robust child
an informal form of address for a man
a person born in the generation following the baby boom when the birth rate fell dramatically