genus Amazona vs Amazona

genus Amazona and Amazona both are nouns.

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

As nouns, genus Amazona and Amazona are synonyms defined as:

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

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