quill vs plumage

quill and plumage both are nouns.

Word	Noun	Adjective	Verb	Adverb
quill	Yes	No	No	No
plumage	Yes	No	No	No

As nouns, plumage is a hypernym of quill; that is, plumage is a word with a broader meaning than quill:

quill: any of the larger wing or tail feathers of a bird
plumage: the light horny waterproof structure forming the external covering of birds

Other hypernyms of quill include plume.

quill (noun)	plumage (noun)
a stiff hollow protective spine on a porcupine or hedgehog	the light horny waterproof structure forming the external covering of birds
the hollow spine of a feather
any of the larger wing or tail feathers of a bird
pen made from a bird's feather