advice vs monition

advice and monition both are nouns.

Word	Noun	Adjective	Verb	Adverb
advice	Yes	No	No	No
monition	Yes	No	No	No

As nouns, monition is a hyponym of advice; that is, monition is a word with a more specific, narrower meaning than advice:

advice: a proposal for an appropriate course of action
monition: cautionary advice about something imminent (especially imminent danger or other unpleasantness)

Other hyponyms of advice include recommendation, indication, admonition, warning, word of advice.

advice (noun)	monition (noun)
a proposal for an appropriate course of action	a firm rebuke
	cautionary advice about something imminent (especially imminent danger or other unpleasantness)
	a summons issued after the filing of a libel or claim directing all parties concerned to show cause why the judgment asked for should not be granted