red-winged blackbird vs Agelaius phoeniceus

red-winged blackbird and Agelaius phoeniceus both are nouns.

Word	Noun	Adjective	Verb	Adverb
red-winged blackbird	Yes	No	No	No
Agelaius phoeniceus	Yes	No	No	No

As nouns, red-winged blackbird and Agelaius phoeniceus are synonyms defined as:

red-winged blackbird and Agelaius phoeniceus: North American blackbird with scarlet patches on the wings

Other synonyms of red-winged blackbird include redwing.

red-winged blackbird (noun)	Agelaius phoeniceus (noun)
North American blackbird with scarlet patches on the wings	North American blackbird with scarlet patches on the wings