open up vs arise

open up and arise both are verbs.

Word	Noun	Adjective	Verb	Adverb
open up	No	No	Yes	No
arise	No	No	Yes	No

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

Other hypernyms of open up include come up.

open up (verb)	arise (verb)
make available	get up and out of bed
become available	result or issue
talk freely and without inhibition	rise to one's feet
cause to open or to become open	move upward
become open	take part in a rebellion; renounce a former allegiance
open up an area or prepare a way	come into existence; take on form or shape
start to operate or function or cause to start operating or functioning	originate or come into being