genus Ochotona vs mammal genus

genus Ochotona and mammal genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Ochotona	Yes	No	No	No
mammal genus	Yes	No	No	No

As nouns, mammal genus is a hypernym of genus Ochotona; that is, mammal genus is a word with a broader meaning than genus Ochotona:

genus Ochotona (noun)	mammal genus (noun)
type genus of the Ochotonidae	a genus of mammals