lousiness vs pediculosis

lousiness and pediculosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
lousiness	Yes	No	No	No
pediculosis	Yes	No	No	No

As nouns, lousiness and pediculosis are synonyms defined as:

lousiness and pediculosis: infestation with lice (Pediculus humanus) resulting in severe itching

lousiness (noun)	pediculosis (noun)
the quality of being disgusting to the senses or emotions	infestation with lice (Pediculus humanus) resulting in severe itching
infestation with lice (Pediculus humanus) resulting in severe itching