sharpen vs music

sharpen is not a noun while music is a noun.

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

sharpen (noun)	music (noun)
	musical activity (singing or whistling etc.)
	punishment for one's actions
	any agreeable (pleasing and harmonious) sounds
	(music) the sounds produced by singers or musical instruments (or reproductions of such sounds)
	an artistic form of auditory communication incorporating instrumental or vocal tones in a structured and continuous manner

sharpen (verb)	music (verb)
become sharp or sharper
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