quill vs quill feather

quill and quill feather both are nouns.

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

As nouns, quill and quill feather are synonyms defined as:

quill and quill feather: any of the larger wing or tail feathers of a bird

Other synonyms of quill include flight feather, pinion.

quill (noun)	quill feather (noun)
a stiff hollow protective spine on a porcupine or hedgehog	any of the larger wing or tail feathers of a bird
the hollow spine of a feather
any of the larger wing or tail feathers of a bird
pen made from a bird's feather