come up vs peak

come up is not a noun while peak is a noun.

Word	Noun	Adjective	Verb	Adverb
come up	No	No	Yes	No
peak	Yes	No	Yes	No

come up (noun)	peak (noun)
	a brim that projects to the front to shade the eyes
	the top or extreme point of something (usually a mountain or hill)
	the highest point (of something)
	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

come up (verb)	peak (verb)
result or issue	to reach the highest point; attain maximum intensity, activity
start running, functioning, or operating
gather or bring together
gather (money or other resources) together over time
bring forth, usually something desirable
come up, of celestial bodies
come to the surface
move toward, travel toward something or somebody or approach something or somebody
move upward
get something or somebody for a specific purpose
originate or come into being
be mentioned