cone vs conical

cone is a noun but conical is not a noun.

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

cone (noun)	conical (noun)
any cone-shaped artifact
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 (adjective)	conical (adjective)
	relating to or resembling a cone

cone (verb)	conical (verb)
make cone-shaped