open up vs verbalise

open up and verbalise both are verbs.

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

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

Other hypernyms of open up include mouth, speak, talk, utter, verbalize.

open up (verb)	verbalise (verb)
make available	convert into a verb
become available	express in speech
talk freely and without inhibition	be verbose
cause to open or to become open	articulate; either verbally or with a cry, shout, or noise
become open
open up an area or prepare a way
start to operate or function or cause to start operating or functioning