peak vs knife

peak and knife both are nouns.

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

peak (noun)	knife (noun)
a brim that projects to the front to shade the eyes	edge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle
the top or extreme point of something (usually a mountain or hill)	a weapon with a handle and blade with a sharp point
the highest point (of something)	any long thin projection that is transient
the most extreme possible amount or value
a V shape
the highest level or degree attainable; the highest stage of development
the period of greatest prosperity or productivity

peak (verb)	knife (verb)
to reach the highest point; attain maximum intensity, activity	use a knife on