genus Amazona vs bird genus

genus Amazona and bird genus both are nouns.

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

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

genus Amazona: a genus of Psittacidae, containing the Amazon parrots (Amazona)
bird genus: a genus of birds

genus Amazona (noun)	bird genus (noun)
a genus of Psittacidae, containing the Amazon parrots (Amazona)	a genus of birds