redbird vs scarlet tanager

redbird and scarlet tanager both are nouns.

Word	Noun	Adjective	Verb	Adverb
redbird	Yes	No	No	No
scarlet tanager	Yes	No	No	No

As nouns, redbird and scarlet tanager are synonyms defined as:

redbird and scarlet tanager: the male is bright red with black wings and tail

Other synonyms of redbird include firebird, Piranga olivacea.

redbird (noun)	scarlet tanager (noun)
crested thick-billed North American finch having bright red plumage in the male	the male is bright red with black wings and tail
the male is bright red with black wings and tail