cimarron vs mountain sheep

cimarron and mountain sheep both are nouns.

Word	Noun	Adjective	Verb	Adverb
cimarron	Yes	No	No	No
mountain sheep	Yes	No	No	No

As nouns, mountain sheep is a hypernym of cimarron; that is, mountain sheep is a word with a broader meaning than cimarron:

cimarron: wild sheep of mountainous regions of western North America having massive curled horns
mountain sheep: any wild sheep inhabiting mountainous regions

cimarron (noun)	mountain sheep (noun)
wild sheep of mountainous regions of western North America having massive curled horns	any wild sheep inhabiting mountainous regions