mystery play vs drama

mystery play and drama both are nouns.

Word	Noun	Adjective	Verb	Adverb
mystery play	Yes	No	No	No
drama	Yes	No	No	No

As nouns, drama is a hypernym of mystery play; that is, drama is a word with a broader meaning than mystery play:

Other hypernyms of mystery play include dramatic play, play.

mystery play (noun)	drama (noun)
a medieval play representing episodes from the life of Christ	the quality of being arresting or highly emotional
	the literary genre of works intended for the theater
	a dramatic work intended for performance by actors on a stage
	an episode that is turbulent or highly emotional