palaver vs verbalise

palaver is a noun but verbalise is not a noun.

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

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

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

palaver (noun)	verbalise (noun)
loud and confused and empty talk
flattery intended to persuade

palaver (verb)	verbalise (verb)
have a lengthy discussion, usually between people of different backgrounds	convert into a verb
influence or urge by gentle urging, caressing, or flattering	express in speech
speak (about unimportant matters) rapidly and incessantly	be verbose
	articulate; either verbally or with a cry, shout, or noise