genus Mustela vs mammal genus

genus Mustela and mammal genus both are nouns.

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

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

genus Mustela (noun)	mammal genus (noun)
type genus of the family Mustelidae: minks and weasels	a genus of mammals