whooper vs Grus americana

whooper and Grus americana both are nouns.

Word	Noun	Adjective	Verb	Adverb
whooper	Yes	No	No	No
Grus americana	Yes	No	No	No

As nouns, whooper and Grus americana are synonyms defined as:

whooper and Grus americana: rare North American crane having black-and-white plumage and a trumpeting call

Other synonyms of whooper include whooping crane.

whooper (noun)	Grus americana (noun)
common Old World swan noted for its whooping call	rare North American crane having black-and-white plumage and a trumpeting call
rare North American crane having black-and-white plumage and a trumpeting call