subtilize vs sharpen

subtilize and sharpen both are verbs.

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

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

Other hypernyms of subtilize include heighten.

subtilize (verb)	sharpen (verb)
make more subtle or refined	become sharp or sharper
make (senses) more keen	make crisp or more crisp and precise
mark fine distinctions and subtleties, as among words	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