Centrocercus urophasianus vs sage hen

Centrocercus urophasianus and sage hen both are nouns.

Word	Noun	Adjective	Verb	Adverb
Centrocercus urophasianus	Yes	No	No	No
sage hen	Yes	No	No	No

As nouns, Centrocercus urophasianus and sage hen are synonyms defined as:

Centrocercus urophasianus and sage hen: large grouse of sagebrush regions of North America

Other synonyms of Centrocercus urophasianus include sage grouse.

Centrocercus urophasianus (noun)	sage hen (noun)
large grouse of sagebrush regions of North America	large grouse of sagebrush regions of North America