firebird vs tanager

firebird and tanager both are nouns.

Word	Noun	Adjective	Verb	Adverb
firebird	Yes	No	No	No
tanager	Yes	No	No	No

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

firebird: the male is bright red with black wings and tail
tanager: any of numerous New World woodland birds having brightly colored males

firebird (noun)	tanager (noun)
eastern subspecies of northern oriole	any of numerous New World woodland birds having brightly colored males
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