sage grouse vs Centrocercus urophasianus

sage grouse and Centrocercus urophasianus both are nouns.

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

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

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

Other synonyms of sage grouse include sage hen.

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