genus Pongo vs mammal genus

genus Pongo and mammal genus both are nouns.

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

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

genus Pongo (noun)	mammal genus (noun)
type genus of the family Pongidae: orangutans	a genus of mammals