genus Meleagris vs bird genus

genus Meleagris and bird genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Meleagris	Yes	No	No	No
bird genus	Yes	No	No	No

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

genus Meleagris (noun)	bird genus (noun)
type genus of the Meleagrididae: wild and domestic turkeys	a genus of birds