Panthera vs mammal genus

Panthera and mammal genus both are nouns.

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

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

Panthera: lions, leopards, snow leopards, jaguars, tigers, cheetahs, saber-toothed tigers
mammal genus: a genus of mammals

Panthera (noun)	mammal genus (noun)
lions, leopards, snow leopards, jaguars, tigers, cheetahs, saber-toothed tigers	a genus of mammals