genus Plecotus vs mammal genus

genus Plecotus and mammal genus both are nouns.

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

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

genus Plecotus: a genus of Vespertilionidae, containing the long-eared bats (Plecotus)
mammal genus: a genus of mammals

genus Plecotus (noun)	mammal genus (noun)
a genus of Vespertilionidae, containing the long-eared bats (Plecotus)	a genus of mammals