whooper vs whooping crane

whooper and whooping crane both are nouns.

Word	Noun	Adjective	Verb	Adverb
whooper	Yes	No	No	No
whooping crane	Yes	No	No	No

As nouns, whooper and whooping crane are synonyms defined as:

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

Other synonyms of whooper include Grus americana.

whooper (noun)	whooping crane (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