keen vs sharp

keen and sharp both are nouns.

keen and sharp both are adjectives.

keen is a verb but sharp is not a verb.

keen is not an adverb while sharp is an adverb.

Word	Noun	Adjective	Verb	Adverb
keen	Yes	Yes	Yes	No
sharp	Yes	Yes	No	Yes

As adjectives, keen and sharp are synonyms defined as:

keen and sharp: having or demonstrating ability to recognize or draw fine distinctions

Other synonyms of keen include acute, discriminating, incisive, knifelike, penetrating, penetrative, piercing.

keen (noun)	sharp (noun)
a funeral lament sung with loud wailing	a long thin sewing needle with a sharp point
	a musical notation indicating one half step higher than the note named

keen (adjective)	sharp (adjective)
excellent	having or made by a thin edge or sharp point; suitable for cutting or piercing
intense or sharp	(of a musical note) raised in pitch by one chromatic semitone
having or demonstrating ability to recognize or draw fine distinctions	keenly and painfully felt; as if caused by a sharp edge or point
having a sharp cutting edge or point	(of something seen or heard) clearly defined
painful as if caused by a sharp instrument	quick and forceful
	having or emitting a high-pitched and sharp tone or tones
	having or demonstrating ability to recognize or draw fine distinctions
	ending in a sharp point
	marked by practical hardheaded intelligence
	dangerously steep
	very sudden and in great amount or degree
	harsh

keen (verb)	sharp (verb)
express grief verbally

keen (adverb)	sharp (adverb)
	changing suddenly in direction and degree

Difference between keen and sharp

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