quill vs pinion

quill and pinion both are nouns.

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

As nouns, quill and pinion are synonyms defined as:

Other synonyms of quill include flight feather, quill feather.

quill (noun)	pinion (noun)
a stiff hollow protective spine on a porcupine or hedgehog	wing of a bird
the hollow spine of a feather	any of the larger wing or tail feathers of a bird
any of the larger wing or tail feathers of a bird	a gear with a small number of teeth designed to mesh with a larger wheel or rack
pen made from a bird's feather

quill (verb)	pinion (verb)
	cut the wings off (of birds)
	bind the arms of