Menopon gallinae vs chicken louse

Menopon gallinae and chicken louse both are nouns.

Word	Noun	Adjective	Verb	Adverb
Menopon gallinae	Yes	No	No	No
chicken louse	Yes	No	No	No

As nouns, Menopon gallinae and chicken louse are synonyms defined as:

Other synonyms of Menopon gallinae include Menopon palladum, shaft louse.

Menopon gallinae (noun)	chicken louse (noun)
a louse parasitic on poultry	a louse parasitic on poultry