quill vs calamus

quill and calamus both are nouns.

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

As nouns, quill and calamus are synonyms defined as:

Other synonyms of quill include shaft.

quill (noun)	calamus (noun)
a stiff hollow protective spine on a porcupine or hedgehog	the hollow spine of a feather
the hollow spine of a feather	any tropical Asian palm of the genus Calamus; light tough stems are a source of rattan canes
any of the larger wing or tail feathers of a bird	perennial marsh plant having swordlike leaves and aromatic roots
pen made from a bird's feather	the aromatic root of the sweet flag used medicinally