flight feather vs quill

flight feather and quill both are nouns.

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

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

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

Other synonyms of flight feather include pinion, quill feather.

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