sharpen vs compound

sharpen is not a noun while compound is a noun.

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

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

Other hypernyms of sharpen include deepen, heighten, intensify.

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

Other hypernyms of sharpen include deepen, heighten, intensify.

sharpen (noun)	compound (noun)
	an enclosure of residences and other building (especially in the Orient)
	a whole formed by a union of two or more elements or parts
	a word (as anthropology, kilocycle, builder) consisting of any of various combinations of words, combining forms, or affixes.
	(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

sharpen (adjective)	compound (adjective)
	composed of more than one part
	consisting of two or more substances or ingredients or elements or parts
	composed of many distinct individuals united to form a whole or colony

sharpen (verb)	compound (verb)
become sharp or sharper	put or add together
make crisp or more crisp and precise	make more intense, stronger, or more marked
raise the pitch of (musical notes)	combine so as to form a whole; mix
put (an image) into focus	create by mixing or combining
make (one's senses) more acute	calculate principal and interest
give a point to
make sharp or sharper
make (images or sounds) sharp or sharper