prognosticator vs predictor

prognosticator and predictor both are nouns.

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

As nouns, prognosticator and predictor are synonyms defined as:

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

Other synonyms of prognosticator include forecaster, soothsayer.

prognosticator (noun)	predictor (noun)
someone who makes predictions of the future (usually on the basis of special knowledge)	a computer for controlling antiaircraft fire that computes the position of an aircraft at the instant of a shell's arrival
	information that supports a probabilistic estimate of future events
	someone who makes predictions of the future (usually on the basis of special knowledge)