adversity vs bad luck

adversity and bad luck both are nouns.

Word	Noun	Adjective	Verb	Adverb
adversity	Yes	No	No	No
bad luck	Yes	No	No	No

As nouns, bad luck is a hypernym of adversity; that is, bad luck is a word with a broader meaning than adversity:

adversity: a stroke of ill fortune; a calamitous event
bad luck: unnecessary and unforeseen trouble resulting from an unfortunate event

Other hypernyms of adversity include misfortune.

As nouns, bad luck is a hypernym of adversity; that is, bad luck is a word with a broader meaning than adversity:

Other hypernyms of adversity include ill luck, misfortune, tough luck.

adversity (noun)	bad luck (noun)
a stroke of ill fortune; a calamitous event	unnecessary and unforeseen trouble resulting from an unfortunate event
a state of misfortune or affliction	an unpredictable outcome that is unfortunate
	an unfortunate state resulting from unfavorable outcomes