visionary vs predictor

visionary and predictor both are nouns.

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

As nouns, predictor is a hyponym of visionary; that is, predictor is a word with a more specific, narrower meaning than visionary:

visionary: a person with unusual powers of foresight
predictor: someone who makes predictions of the future (usually on the basis of special knowledge)

Other hyponyms of visionary include anticipant, anticipator, diviner, fantast, futurist, forecaster, prognosticator, soothsayer.

visionary (noun)	predictor (noun)
a person with unusual powers of foresight	a computer for controlling antiaircraft fire that computes the position of an aircraft at the instant of a shell's arrival
a person given to fanciful speculations and enthusiasms with little regard for what is actually possible	information that supports a probabilistic estimate of future events
	someone who makes predictions of the future (usually on the basis of special knowledge)

visionary (adjective)	predictor (adjective)
not practical or realizable; speculative