Thomomys bottae vs pouched rat

Thomomys bottae and pouched rat both are nouns.

Word	Noun	Adjective	Verb	Adverb
Thomomys bottae	Yes	No	No	No
pouched rat	Yes	No	No	No

As nouns, pouched rat is a hypernym of Thomomys bottae; that is, pouched rat is a word with a broader meaning than Thomomys bottae:

Thomomys bottae: of valleys and mountain meadows of western United States
pouched rat: burrowing rodent of the family Geomyidae having large external cheek pouches; of Central America and southwestern North America

Other hypernyms of Thomomys bottae include gopher, pocket gopher.

Thomomys bottae (noun)	pouched rat (noun)
of valleys and mountain meadows of western United States	burrowing rodent of the family Geomyidae having large external cheek pouches; of Central America and southwestern North America