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.
... the friction between the axis and the groove rims will accelerate or brake the spinning gyroscope, with a maximum effect when the axis starts "rolling" inside th ...