flight feather vs quill feather

flight feather and quill feather both are nouns.

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

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

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

Other synonyms of flight feather include pinion, quill.

flight feather (noun)	quill feather (noun)
any of the larger wing or tail feathers of a bird	any of the larger wing or tail feathers of a bird