rise up vs ascend

rise up and ascend both are verbs.

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

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

Other hypernyms of rise up include go up.

rise up (verb)	ascend (verb)
come to the surface	slope upwards
stand up on the hind legs, of quadrupeds	travel up
take part in a rebellion; renounce a former allegiance	come up, of celestial bodies
	go along towards (a river's) source
	move to a better position in life or to a better job
	appear to be moving upward, as by means of tendrils
	become king or queen
	go back in order of genealogical succession