genus Cricetus vs mammal genus

genus Cricetus and mammal genus both are nouns.

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

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

genus Cricetus (noun)	mammal genus (noun)
type genus of the Cricetidae: Old World hamsters	a genus of mammals