parer vs knife

parer and knife both are nouns.

Word	Noun	Adjective	Verb	Adverb
parer	Yes	No	No	No
knife	Yes	No	Yes	No

As nouns, knife is a hypernym of parer; that is, knife is a word with a broader meaning than parer:

parer: a small sharp knife used in paring fruits or vegetables
knife: edge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle

parer (noun)	knife (noun)
a small sharp knife used in paring fruits or vegetables	edge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle
a manicurist who trims the fingernails	a weapon with a handle and blade with a sharp point
	any long thin projection that is transient

parer (verb)	knife (verb)
	use a knife on