Harpia harpyja vs harpy

Harpia harpyja and harpy both are nouns.

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

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

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

Other synonyms of Harpia harpyja include harpy eagle.

Harpia harpyja (noun)	harpy (noun)
large black-and-white crested eagle of tropical America	large black-and-white crested eagle of tropical America
	any of various fruit bats of the genus Nyctimene distinguished by nostrils drawn out into diverging tubes
	a malicious woman with a fierce temper