Are 'theatr' and 'sinema' the same thing? In English the theatre and the cinema are quite different things, so this is confusing.
No they are not the same. They different as in English. 'Theatre' for a 'drama' and 'Sinema' for a 'ffilm'.
Ok, it was accepting 'sinema' as an answer
Presumably to cater towards speakers of American English, who watch "movies" in "movie theaters" rather than "films" in "cinemas".
Huh. Well, I'm a learner and was only taught that way... So, maybe in use they can be interchangeable? Sorry that's not helpful.