guess vs foretell

guess is a noun but foretell is not a noun.

Word	Noun	Adjective	Verb	Adverb
guess	Yes	No	Yes	No
foretell	No	No	Yes	No

As verbs, foretell is a hyponym of guess; that is, foretell is a word with a more specific, narrower meaning than guess:

Other hyponyms of guess include anticipate, call, forebode, predict, prognosticate, promise, surmise, suspect.

guess (noun)	foretell (noun)
an estimate based on little or no information
a message expressing an opinion based on incomplete evidence

guess (verb)	foretell (verb)
expect, believe, or suppose	make a prediction about; tell in advance
judge tentatively or form an estimate of (quantities or time)	indicate, as with a sign or an omen
guess correctly; solve by guessing	foreshadow or presage
put forward, of a guess, in spite of possible refutation