cone vs retina

cone and retina both are nouns.

Word	Noun	Adjective	Verb	Adverb
cone	Yes	No	Yes	No
retina	Yes	No	No	No

cone (noun)	retina (noun)
any cone-shaped artifact	the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve
a visual receptor cell in the retina that is sensitive to bright light and to color
cone-shaped mass of ovule- or spore-bearing scales or bracts
a shape whose base is a circle and whose sides taper up to a point

cone (verb)	retina (verb)
make cone-shaped