go up vs come on

go up and come on both are verbs.

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

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

Other synonyms of go up include approach, come near, draw close, draw near, near.

go up (verb)	come on (verb)
increase in value or to a higher point	occur or become available
burn completely; be consumed or destroyed by fire	appear or become visible; make a showing
move upward	develop in a positive way
go upward with gradual or continuous progress	start running, functioning, or operating
be erected, built, or constructed	move towards
move towards
travel up