drone on vs verbalise

drone on and verbalise both are verbs.

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

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

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

drone on (verb)	verbalise (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