vocalize vs verbalise

vocalize and verbalise both are verbs.

Word	Noun	Adjective	Verb	Adverb
vocalize	No	No	Yes	No
verbalise	No	No	Yes	No

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

Other hypernyms of vocalize include mouth, speak, talk, utter, verbalize.

vocalize (verb)	verbalise (verb)
pronounce as a vowel	convert into a verb
express or state clearly	express in speech
utter with vibrating vocal chords	be verbose
utter speech sounds	articulate; either verbally or with a cry, shout, or noise
sing (each note a scale or in a melody) with the same vowel