chicken louse vs Menopon gallinae

chicken louse and Menopon gallinae both are nouns.

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

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

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

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