speech vs verbalise

speech is a noun but verbalise is not a noun.

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

speech (noun)	verbalise (noun)
the mental faculty or power of vocal communication
(language) communication by word of mouth
the act of delivering a formal spoken communication to an audience
words making up the dialogue of a play
a lengthy rebuke
the exchange of spoken words
your characteristic style or manner of expressing yourself orally
something spoken

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