vaticinate vs promise

vaticinate is not a noun while promise is a noun.

Word	Noun	Adjective	Verb	Adverb
vaticinate	No	No	Yes	No
promise	Yes	No	Yes	No

As verbs, promise is a hypernym of vaticinate; that is, promise is a word with a broader meaning than vaticinate:

Other hypernyms of vaticinate include anticipate, call, forebode, foretell, predict, prognosticate.

vaticinate (noun)	promise (noun)
	grounds for feeling hopeful about the future
	a verbal commitment by one person to another agreeing to do (or not to do) something in the future

vaticinate (verb)	promise (verb)
predict or reveal through, or as if through, divine inspiration	make a promise or commitment
foretell through or as if through the power of prophecy	promise to undertake or give
	make a prediction about; tell in advance
	give grounds for expectations