visionary vs windy

visionary is a noun but windy is not a noun.

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

As adjectives, visionary and windy are synonyms defined as:

Other synonyms of visionary include airy, impractical, Laputan.

visionary (noun)	windy (noun)
a person with unusual powers of foresight
a person given to fanciful speculations and enthusiasms with little regard for what is actually possible

visionary (adjective)	windy (adjective)
not practical or realizable; speculative	resembling the wind in speed, force, or variability
	using or containing too many words
	abounding in or exposed to the wind or breezes
	not practical or realizable; speculative