Comedy film is a genre of film

Film

A film, also called a movie or motion picture, is a series of still or moving images. It is produced by recording photographic images with cameras, or by creating images using animation techniques or visual effects...

 in which the main emphasis is on humour

Humour

Humour or humor is the tendency of particular cognitive experiences to provoke laughter and provide amusement...

. They are designed to elicit laughter from the audience. Comedies are mostly light-hearted dramas and are made to amuse and entertain the audiences. The comedy genre humorously exaggerate situations, the way of speaking, the action and characters.

Films in this style traditionally have a happy ending (the black comedy

Black comedy

A black comedy, or dark comedy, is a comic work that employs black humor or gallows humor. The definition of black humor is problematic; it has been argued that it corresponds to the earlier concept of gallows humor; and that, as humor has been defined since Freud as a comedic act that anesthetizes...

 being an exception).