drone on vs verbalize

drone on and verbalize both are verbs.

Word	Noun	Adjective	Verb	Adverb
drone on	No	No	Yes	No
verbalize	No	No	Yes	No

As verbs, verbalize is a hypernym of drone on; that is, verbalize is a word with a broader meaning than drone on:

Other hypernyms of drone on include mouth, speak, talk, utter, verbalise.

drone on (verb)	verbalize (verb)
talk in a monotonous voice	convert into a verb
	express in speech
	be verbose
	articulate; either verbally or with a cry, shout, or noise