louse vs derogation

louse and derogation both are nouns.

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

louse (noun)	derogation (noun)
wingless usually flattened bloodsucking insect parasitic on warm-blooded animals	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
any of several small insects especially aphids that feed by sucking the juices from plants	a communication that belittles somebody or something
wingless insect with mouth parts adapted for biting; mostly parasitic on birds
a person who has a nasty or unethical character undeserving of respect