thankless wretch vs derogation

thankless wretch and derogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
thankless wretch	Yes	No	No	No
derogation	Yes	No	No	No

thankless wretch (noun)	derogation (noun)
a person who shows no gratitude	(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