pediculosis vs lousiness

pediculosis and lousiness both are nouns.

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

As nouns, pediculosis and lousiness are synonyms defined as:

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

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