genus Macrotis vs mammal genus

genus Macrotis and mammal genus both are nouns.

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

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

genus Macrotis (noun)	mammal genus (noun)
a genus of Peramelidae	a genus of mammals