unpredictability vs uncertainty

unpredictability and uncertainty both are nouns.

Word	Noun	Adjective	Verb	Adverb
unpredictability	Yes	No	No	No
uncertainty	Yes	No	No	No

As nouns, uncertainty is a hypernym of unpredictability; that is, uncertainty is a word with a broader meaning than unpredictability:

Other hypernyms of unpredictability include precariousness, uncertainness.

unpredictability (noun)	uncertainty (noun)
lacking predictability	being unsettled or in doubt or dependent on chance
the trait of being unpredictably irresolute	the state of being unsure of something
the quality of being guided by sudden unpredictable impulses