Harpia harpyja vs harpy eagle

Harpia harpyja and harpy eagle both are nouns.

Word	Noun	Adjective	Verb	Adverb
Harpia harpyja	Yes	No	No	No
harpy eagle	Yes	No	No	No

As nouns, Harpia harpyja and harpy eagle are synonyms defined as:

Harpia harpyja and harpy eagle: large black-and-white crested eagle of tropical America

Other synonyms of Harpia harpyja include harpy.

Harpia harpyja (noun)	harpy eagle (noun)
large black-and-white crested eagle of tropical America	large black-and-white crested eagle of tropical America