genus Glis vs mammal genus

genus Glis and mammal genus both are nouns.

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

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

genus Glis (noun)	mammal genus (noun)
type genus of the Gliridae	a genus of mammals