ascend vs come up

ascend and come up both are verbs.

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

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

Other hyponyms of ascend include rise, rise up, surface, uprise.

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

Other synonyms of ascend include rise, uprise.

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

Other hypernyms of ascend include arise, go up, lift, move up, rise, uprise.

ascend (verb)	come up (verb)
slope upwards	result or issue
travel up	start running, functioning, or operating
come up, of celestial bodies	gather or bring together
go along towards (a river's) source	gather (money or other resources) together over time
move to a better position in life or to a better job	bring forth, usually something desirable
appear to be moving upward, as by means of tendrils	come up, of celestial bodies
become king or queen	come to the surface
go back in order of genealogical succession	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