disparagement vs louse

disparagement and louse both are nouns.

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

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