genus Gypaetus vs bird genus

genus Gypaetus and bird genus both are nouns.

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

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

genus Gypaetus: in some classifications the type genus of the family Aegypiidae
bird genus: a genus of birds

genus Gypaetus (noun)	bird genus (noun)
in some classifications the type genus of the family Aegypiidae	a genus of birds