Carduelis hornemanni vs finch

Carduelis hornemanni and finch both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carduelis hornemanni	Yes	No	No	No
finch	Yes	No	No	No

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

Carduelis hornemanni: small siskin-like finch with a red crown
finch: any of numerous small songbirds with short stout bills adapted for crushing seeds

Carduelis hornemanni (noun)	finch (noun)
small siskin-like finch with a red crown	any of numerous small songbirds with short stout bills adapted for crushing seeds