nuthatch vs oscine

nuthatch and oscine both are nouns.

Word	Noun	Adjective	Verb	Adverb
nuthatch	Yes	No	No	No
oscine	Yes	Yes	No	No

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

nuthatch: any of various small short-tailed songbirds with strong feet and a sharp beak that feed on small nuts and insects
oscine: passerine bird having specialized vocal apparatus

Other hypernyms of nuthatch include oscine bird.

nuthatch (noun)	oscine (noun)
any of various small short-tailed songbirds with strong feet and a sharp beak that feed on small nuts and insects	passerine bird having specialized vocal apparatus

nuthatch (adjective)	oscine (adjective)
	of or relating to the songbirds