Films are often divided into genres, which describe the typical subject matter -- what the film is about. This is distinct from film styles, which describes filmic conventions which can be applied to any genre. Of course, the more that genres are defined, the more likely that a filmmaker will try to combine, transcend and evade categories, so not every film can be neatly labeled.
... sent by the king of Persia to sail down the Indus River and around Arabia to Egypt
Ernest Shackleton, (1874-1922), attempted to reach the South Pole and came further ...