stormy vs tempestuous

stormy and tempestuous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
stormy	No	Yes	No	No
tempestuous	No	Yes	No	No

As adjectives, stormy and tempestuous are synonyms defined as:

stormy (adjective)	tempestuous (adjective)
(especially of weather) affected or characterized by storms or commotion	(of the elements) as if showing violent anger
characterized by violent emotions or behavior	characterized by violent emotions or behavior