Opisthocomus hoazin vs hoactzin

Opisthocomus hoazin and hoactzin both are nouns.

Word	Noun	Adjective	Verb	Adverb
Opisthocomus hoazin	Yes	No	No	No
hoactzin	Yes	No	No	No

As nouns, Opisthocomus hoazin and hoactzin are synonyms defined as:

Opisthocomus hoazin and hoactzin: crested ill-smelling South American bird whose young have claws on the first and second digits of the wings

Other synonyms of Opisthocomus hoazin include hoatzin, stinkbird.

Opisthocomus hoazin (noun)	hoactzin (noun)
crested ill-smelling South American bird whose young have claws on the first and second digits of the wings	crested ill-smelling South American bird whose young have claws on the first and second digits of the wings