prognosis vs prediction

prognosis and prediction both are nouns.

Word	Noun	Adjective	Verb	Adverb
prognosis	Yes	No	No	No
prediction	Yes	No	No	No

As nouns, prediction is a hypernym of prognosis; that is, prediction is a word with a broader meaning than prognosis:

Other hypernyms of prognosis include forecasting, foretelling, prognostication.

prognosis (noun)	prediction (noun)
a prediction of the course of a disease	the act of predicting (as by reasoning about the future)
a prediction about how something (as the weather) will develop	a statement made about the future