genus Tayassu vs mammal genus

genus Tayassu and mammal genus both are nouns.

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

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

genus Tayassu (noun)	mammal genus (noun)
type genus of the Tayassuidae	a genus of mammals