unwelcome guest vs derogation

unwelcome guest and derogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
unwelcome guest	Yes	No	No	No
derogation	Yes	No	No	No

unwelcome guest (noun)	derogation (noun)
someone who gets in (to a party) without an invitation or without paying	(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