perceptive vs knifelike

perceptive and knifelike both are adjectives.

Word	Noun	Adjective	Verb	Adverb
perceptive	No	Yes	No	No
knifelike	No	Yes	No	No

perceptive (adjective)	knifelike (adjective)
having the ability to perceive or understand; keen in discernment	having a sharp or distinct edge
of or relating to perception	having or demonstrating ability to recognize or draw fine distinctions
	cutting or able to cut as if with a knife
	painful as if caused by a sharp instrument