hangbird vs Baltimore bird

hangbird and Baltimore bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
hangbird	Yes	No	No	No
Baltimore bird	Yes	No	No	No

As nouns, hangbird and Baltimore bird are synonyms defined as:

Other synonyms of hangbird include Baltimore oriole, firebird, Icterus galbula galbula.

hangbird (noun)	Baltimore bird (noun)
eastern subspecies of northern oriole	eastern subspecies of northern oriole