blackpoll vs wood warbler

blackpoll and wood warbler both are nouns.

Word	Noun	Adjective	Verb	Adverb
blackpoll	Yes	No	No	No
wood warbler	Yes	No	No	No

As nouns, wood warbler is a hypernym of blackpoll; that is, wood warbler is a word with a broader meaning than blackpoll:

blackpoll: North American warbler having a black-and-white head
wood warbler: small bright-colored American songbird with a weak unmusical song

Other hypernyms of blackpoll include New World warbler.

blackpoll (noun)	wood warbler (noun)
North American warbler having a black-and-white head	small bright-colored American songbird with a weak unmusical song
	European woodland warbler with dull yellow plumage