firebird vs northern oriole

firebird and northern oriole both are nouns.

Word	Noun	Adjective	Verb	Adverb
firebird	Yes	No	No	No
northern oriole	Yes	No	No	No

As nouns, northern oriole is a hypernym of firebird; that is, northern oriole is a word with a broader meaning than firebird:

Other hypernyms of firebird include Icterus galbula.

firebird (noun)	northern oriole (noun)
eastern subspecies of northern oriole	a kind of New World oriole
the male is bright red with black wings and tail
tropical American flycatcher found as far north as southern Texas and Arizona; adult male has bright scarlet and black plumage