Coccyzus erythropthalmus vs black-billed cuckoo

Coccyzus erythropthalmus and black-billed cuckoo both are nouns.

Word	Noun	Adjective	Verb	Adverb
Coccyzus erythropthalmus	Yes	No	No	No
black-billed cuckoo	Yes	No	No	No

As nouns, Coccyzus erythropthalmus and black-billed cuckoo are synonyms defined as:

Coccyzus erythropthalmus and black-billed cuckoo: North American cuckoo; builds a nest and rears its own young

Coccyzus erythropthalmus (noun)	black-billed cuckoo (noun)
North American cuckoo; builds a nest and rears its own young	North American cuckoo; builds a nest and rears its own young