ladies' man vs derogation

ladies' man and derogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
ladies' man	Yes	No	No	No
derogation	Yes	No	No	No

ladies' man (noun)	derogation (noun)
a man who takes advantage of women	(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