sharpen vs sharpen

sharpen and sharpen both are verbs.

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

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