hone vs sharpen

hone is a noun but sharpen is not a noun.

Word	Noun	Adjective	Verb	Adverb
hone	Yes	No	Yes	No
sharpen	No	No	Yes	No

As verbs, sharpen is a hypernym of hone; that is, sharpen is a word with a broader meaning than hone:

hone (noun)	sharpen (noun)
a whetstone made of fine gritstone; used for sharpening razors
a tool consisting of a number of fine abrasive slips held in a machine head, rotated and reciprocated to impart a smooth finish to cylinder bores, etc.

hone (verb)	sharpen (verb)
make perfect or complete	become sharp or sharper
sharpen with a hone	make crisp or more crisp and precise
	raise the pitch of (musical notes)
	put (an image) into focus
	make (one's senses) more acute
	give a point to
	make sharp or sharper
	make (images or sounds) sharp or sharper