Liposcelis divinatorius vs book louse

Liposcelis divinatorius and book louse both are nouns.

Word	Noun	Adjective	Verb	Adverb
Liposcelis divinatorius	Yes	No	No	No
book louse	Yes	No	No	No

As nouns, Liposcelis divinatorius and book louse are synonyms defined as:

Liposcelis divinatorius and book louse: minute wingless psocopterous insects injurious to books and papers

Other synonyms of Liposcelis divinatorius include booklouse, deathwatch.

Liposcelis divinatorius (noun)	book louse (noun)
minute wingless psocopterous insects injurious to books and papers	minute wingless psocopterous insects injurious to books and papers