Emberiza aureola vs bunting

Emberiza aureola and bunting both are nouns.

Word	Noun	Adjective	Verb	Adverb
Emberiza aureola	Yes	No	No	No
bunting	Yes	No	No	No

As nouns, bunting is a hypernym of Emberiza aureola; that is, bunting is a word with a broader meaning than Emberiza aureola:

Emberiza aureola (noun)	bunting (noun)
common in Russia and Siberia	any of numerous seed-eating songbirds of Europe or North America
	a loosely woven fabric used for flags, etc.