go on vs come up

go on and come up both are verbs.

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

As verbs, come up is a hyponym of go on; that is, come up is a word with a more specific, narrower meaning than go on:

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

Other synonyms of go on include come on.

go on (verb)	come up (verb)
come to pass	result or issue
continue talking	start running, functioning, or operating
start running, functioning, or operating	gather or bring together
move forward, also in the metaphorical sense	gather (money or other resources) together over time
continue a certain state, condition, or activity	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