waxwing vs cedarbird

waxwing and cedarbird both are nouns.

Word	Noun	Adjective	Verb	Adverb
waxwing	Yes	No	No	No
cedarbird	Yes	No	No	No

As nouns, cedarbird is a hyponym of waxwing; that is, cedarbird is a word with a more specific, narrower meaning than waxwing:

waxwing: brown velvety-plumaged songbirds of the Northern Hemisphere having crested heads and red waxy wing tips
cedarbird: widely distributed over temperate North America

Other hyponyms of waxwing include Bombycilla cedrorun, cedar waxwing, Bohemian waxwing, Bombycilla garrulus.

waxwing (noun)	cedarbird (noun)
brown velvety-plumaged songbirds of the Northern Hemisphere having crested heads and red waxy wing tips	widely distributed over temperate North America