prognostication vs forecasting

prognostication and forecasting both are nouns.

Word	Noun	Adjective	Verb	Adverb
prognostication	Yes	No	No	No
forecasting	Yes	No	No	No

As nouns, prognostication and forecasting are synonyms defined as:

Other synonyms of prognostication include foretelling, prediction.

prognostication (noun)	forecasting (noun)
knowledge of the future (usually said to be obtained from a divine source)	a statement made about the future
a statement made about the future
a sign of something about to happen