bighorn sheep vs Ovis canadensis

bighorn sheep and Ovis canadensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
bighorn sheep	Yes	No	No	No
Ovis canadensis	Yes	No	No	No

As nouns, bighorn sheep and Ovis canadensis are synonyms defined as:

bighorn sheep and Ovis canadensis: wild sheep of mountainous regions of western North America having massive curled horns

Other synonyms of bighorn sheep include bighorn, cimarron, Rocky Mountain bighorn, Rocky Mountain sheep.

bighorn sheep (noun)	Ovis canadensis (noun)
wild sheep of mountainous regions of western North America having massive curled horns	wild sheep of mountainous regions of western North America having massive curled horns