scarlet tanager vs redbird

scarlet tanager and redbird both are nouns.

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

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

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

Other synonyms of scarlet tanager include firebird, Piranga olivacea.

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