finch vs oscine

finch and oscine both are nouns.

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

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

finch: any of numerous small songbirds with short stout bills adapted for crushing seeds
oscine: passerine bird having specialized vocal apparatus

Other hypernyms of finch include oscine bird.

finch (noun)	oscine (noun)
any of numerous small songbirds with short stout bills adapted for crushing seeds	passerine bird having specialized vocal apparatus

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