blurt out vs verbalise

blurt out and verbalise both are verbs.

Word	Noun	Adjective	Verb	Adverb
blurt out	No	No	Yes	No
verbalise	No	No	Yes	No

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

Other hypernyms of blurt out include mouth, speak, talk, utter, verbalize.

blurt out (verb)	verbalise (verb)
utter impulsively	convert into a verb
	express in speech
	be verbose
	articulate; either verbally or with a cry, shout, or noise