Spizella arborea vs tree sparrow

Spizella arborea and tree sparrow both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spizella arborea	Yes	No	No	No
tree sparrow	Yes	No	No	No

As nouns, Spizella arborea and tree sparrow are synonyms defined as:

Spizella arborea and tree sparrow: finch common in winter in the northern U.S.

Spizella arborea (noun)	tree sparrow (noun)
finch common in winter in the northern U.S.	Eurasian sparrow smaller than the house sparrow
	finch common in winter in the northern U.S.