Lasiurus vs mammal genus

Lasiurus and mammal genus both are nouns.

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

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

Lasiurus: a genus of Vespertilionidae, containing the hairy-tailed bats (Lasiurus)
mammal genus: a genus of mammals

Lasiurus (noun)	mammal genus (noun)
a genus of Vespertilionidae, containing the hairy-tailed bats (Lasiurus)	a genus of mammals