presage vs signal

presage and signal both are nouns.

Word	Noun	Adjective	Verb	Adverb
presage	Yes	No	Yes	No
signal	Yes	Yes	Yes	No

As verbs, signal is a hypernym of presage; that is, signal is a word with a broader meaning than presage:

Other hypernyms of presage include bespeak, betoken, indicate, point.

presage (noun)	signal (noun)
a sign of something about to happen	any nonverbal action or gesture that encodes a message
a foreboding about what is about to happen	any incitement to action
	an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes

presage (adjective)	signal (adjective)
	notably out of the ordinary

presage (verb)	signal (verb)
indicate, as with a sign or an omen	communicate silently and non-verbally by signals or signs
	be a signal for or a symptom of