diviner vs visionary

diviner and visionary both are nouns.

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

As nouns, visionary is a hypernym of diviner; that is, visionary is a word with a broader meaning than diviner:

diviner: someone who claims to discover hidden knowledge with the aid of supernatural powers
visionary: a person with unusual powers of foresight

Other hypernyms of diviner include illusionist, seer.

diviner (noun)	visionary (noun)
someone who claims to discover hidden knowledge with the aid of supernatural powers	a person with unusual powers of foresight
	a person given to fanciful speculations and enthusiasms with little regard for what is actually possible

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