whooping crane vs Grus americana

whooping crane and Grus americana both are nouns.

Word	Noun	Adjective	Verb	Adverb
whooping crane	Yes	No	No	No
Grus americana	Yes	No	No	No

As nouns, whooping crane and Grus americana are synonyms defined as:

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

Other synonyms of whooping crane include whooper.

whooping crane (noun)	Grus americana (noun)
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