quill feather vs flight feather

quill feather and flight feather both are nouns.

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

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

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

Other synonyms of quill feather include pinion, quill.

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