indigo finch vs Passerina cyanea

indigo finch and Passerina cyanea both are nouns.

Word	Noun	Adjective	Verb	Adverb
indigo finch	Yes	No	No	No
Passerina cyanea	Yes	No	No	No

As nouns, indigo finch and Passerina cyanea are synonyms defined as:

indigo finch and Passerina cyanea: small deep blue North American bunting

Other synonyms of indigo finch include indigo bird, indigo bunting.

indigo finch (noun)	Passerina cyanea (noun)
small deep blue North American bunting	small deep blue North American bunting