louse vs dirt ball

louse and dirt ball both are nouns.

Word	Noun	Adjective	Verb	Adverb
louse	Yes	No	No	No
dirt ball	Yes	No	No	No

As nouns, louse and dirt ball are synonyms defined as:

louse and dirt ball: a person who has a nasty or unethical character undeserving of respect

Other synonyms of louse include insect, worm.

louse (noun)	dirt ball (noun)
wingless usually flattened bloodsucking insect parasitic on warm-blooded animals	a person who has a nasty or unethical character undeserving of respect
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