oriole vs fig-bird

oriole and fig-bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
oriole	Yes	No	No	No
fig-bird	Yes	No	No	No

As nouns, fig-bird is a hyponym of oriole; that is, fig-bird is a word with a more specific, narrower meaning than oriole:

oriole: mostly tropical songbird; the male is usually bright orange and black
fig-bird: greenish-yellow Australian oriole feeding chiefly on figs and other fruits

Other hyponyms of oriole include golden oriole, Oriolus oriolus.

oriole (noun)	fig-bird (noun)
American songbird; male is black and orange or yellow	greenish-yellow Australian oriole feeding chiefly on figs and other fruits
mostly tropical songbird; the male is usually bright orange and black