windy vs long-winded

windy and long-winded both are adjectives.

Word	Noun	Adjective	Verb	Adverb
windy	No	Yes	No	No
long-winded	No	Yes	No	No

As adjectives, windy and long-winded are synonyms defined as:

Other synonyms of windy include tedious, verbose, wordy.

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