honeycreeper vs oscine bird

honeycreeper and oscine bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
honeycreeper	Yes	No	No	No
oscine bird	Yes	No	No	No

As nouns, oscine bird is a hypernym of honeycreeper; that is, oscine bird is a word with a broader meaning than honeycreeper:

honeycreeper: small bright-colored tropical American songbird with a curved bill for sucking nectar
oscine bird: passerine bird having specialized vocal apparatus

Other hypernyms of honeycreeper include oscine.

honeycreeper (noun)	oscine bird (noun)
small bright-colored tropical American songbird with a curved bill for sucking nectar	passerine bird having specialized vocal apparatus
small to medium-sized finches of the Hawaiian islands