theatre studies vs arts

theatre studies and arts both are nouns.

Word	Noun	Adjective	Verb	Adverb
theatre studies	Yes	No	No	No
arts	Yes	No	No	No

As nouns, arts is a hypernym of theatre studies; that is, arts is a word with a broader meaning than theatre studies:

theatre studies: the study of theatrical performance in relation to its literary, physical, psycho-biological, sociological, and historical contexts.
arts: studies intended to provide general knowledge and intellectual skills (rather than occupational or professional skills)

Other hypernyms of theatre studies include humanistic discipline, humanities, liberal arts.

theatre studies (noun)	arts (noun)
the study of theatrical performance in relation to its literary, physical, psycho-biological, sociological, and historical contexts.	studies intended to provide general knowledge and intellectual skills (rather than occupational or professional skills)