aleatory vs unpredictable

aleatory and unpredictable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
aleatory	No	Yes	No	No
unpredictable	No	Yes	No	No

aleatory (adjective)	unpredictable (adjective)
dependent on chance	not capable of being foretold
	unknown in advance
	not occurring at a regular rate or fixed intervals