clamour vs verbalise

clamour is a noun but verbalise is not a noun.

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

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

Other hypernyms of clamour include express, give tongue to, utter, verbalize.

clamour (noun)	verbalise (noun)
loud and persistent outcry from many people

clamour (verb)	verbalise (verb)
utter or proclaim insistently and noisily	convert into a verb
make loud demands	express in speech
	be verbose
	articulate; either verbally or with a cry, shout, or noise