prognosticator vs forecaster

prognosticator and forecaster both are nouns.

Word	Noun	Adjective	Verb	Adverb
prognosticator	Yes	No	No	No
forecaster	Yes	No	No	No

As nouns, prognosticator and forecaster are synonyms defined as:

prognosticator and forecaster: someone who makes predictions of the future (usually on the basis of special knowledge)

Other synonyms of prognosticator include predictor, soothsayer.

prognosticator (noun)	forecaster (noun)
someone who makes predictions of the future (usually on the basis of special knowledge)	someone who makes predictions of the future (usually on the basis of special knowledge)