black-billed cuckoo vs Coccyzus erythropthalmus

black-billed cuckoo and Coccyzus erythropthalmus both are nouns.

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

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

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

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