blacktail deer vs burro deer

blacktail deer and burro deer both are nouns.

Word	Noun	Adjective	Verb	Adverb
blacktail deer	Yes	No	No	No
burro deer	Yes	No	No	No

As nouns, burro deer is a hypernym of blacktail deer; that is, burro deer is a word with a broader meaning than blacktail deer:

blacktail deer: mule deer of western Rocky Mountains
burro deer: long-eared deer of western North America with two-pronged antlers

Other hypernyms of blacktail deer include mule deer, Odocoileus hemionus.

blacktail deer (noun)	burro deer (noun)
mule deer of western Rocky Mountains	long-eared deer of western North America with two-pronged antlers