come on vs come up

come on and come up both are verbs.

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

As verbs, come on and come up are synonyms defined as:

Other synonyms of come on include go on.

As verbs, come up is a hypernym of come on; that is, come up is a word with a broader meaning than come on:

come on: move towards
come up: move toward, travel toward something or somebody or approach something or somebody

Other hypernyms of come on include come.

come on (verb)	come up (verb)
occur or become available	result or issue
appear or become visible; make a showing	start running, functioning, or operating
develop in a positive way	gather or bring together
start running, functioning, or operating	gather (money or other resources) together over time
move towards	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