Ovis canadensis vs bighorn sheep

Ovis canadensis and bighorn sheep both are nouns.

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

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

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

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

Ovis canadensis (noun)	bighorn sheep (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