clack vs verbalise

clack is a noun but verbalise is not a noun.

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

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

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

clack (noun)	verbalise (noun)
a simple valve with a hinge on one side; allows fluid to flow in only one direction
a sharp abrupt noise as if two objects hit together; may be repeated

clack (verb)	verbalise (verb)
speak (about unimportant matters) rapidly and incessantly	convert into a verb
make a clucking sounds, characteristic of hens	express in speech
make a rattling sound	be verbose
	articulate; either verbally or with a cry, shout, or noise