drone on vs speak

drone on and speak both are verbs.

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

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

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

drone on (verb)	speak (verb)
talk in a monotonous voice	express in speech
	exchange thoughts; talk with
	use language
	give a speech to
	make a characteristic or natural sound