Genes

Horror films are a movie genre seeking to elicit a negative emotional reaction from viewers by playing on the audience's most primal fears. They often feature scenes that startle the viewer through the means of macabre and the supernatural and they also do the physiological horror such as the Blair witch project also   some times they  may overlap with the fantasy and supernatural genre. Horrors frequently overlap with the thriller genre and they nearly always use special effects mainly to show gore .

Horror films deal with the viewer's nightmares, hidden worst fears, revulsions and terror of the unknown. Although a good deal of it is about the supernatural, if some films contain a plot about morbidity, serial killers, a disease/virus outbreak and surrealism, they may be termed "horror" they show this by doing a list of shots mainly using different height angles to show power and the threat by a character and also the other way round to show weakness of other characters .

Action film is a film genre where one or more heroes is thrust into a series of challenges that require physical feats, extended fights and frenetic chases. They occasionally have a resourceful character struggling against incredible odds such as, life-threatening situations, an evil villain,  the hero will usually have victory achieved at the end after difficult physical efforts and violence.

Story and character development are generally secondary to explosions, fist fights, gunplay and car chases. is classical sped up action with cut throat dialogue   lots of explosions and special effects  mainly on borders of realism and comedy and thriller there very easy to be intrigued  because they will make you relate with the character very quickly and usually that’s to understand the motives for the violence also you see a lot of track shots point of view shot and a lot non diegetic  pumped up music .

 

Crime stories in this genre often highlight the life of a crime figure or a crime's victims. Or they glorify the rise and fall of a particular criminals, gang, bank

robber, murderer or lawbreakers in personal power struggles or conflict with law and order figures, an underling or competitive colleague, or a rival gang. 

Headline-grabbing situations, real-life gangsters, or crime reports have often been used in crime films. Gangster/crime films are usually set in large, crowded cities, to provide a view of the secret world of the criminal: dark nightclubs or streets with lurid neon signs, fast cars, piles of cash, sleazy bars, contraband, seedy living quarters or rooming houses. Exotic locales for crimes often add an element of adventure and wealth. Writers dreamed up appropriate gangland .

 Gangster films are morality tales: Horatio Alger  success stories turned upside down in which criminals live in an inverted dream world of success and wealth. Often from poor immigrant families, gangster characters often fall prey to crime in the pursuit of wealth, status, and material possessions clothes and cars because all other "normal" avenues to the top are unavailable to them. Although they are doomed to failure and inevitable death usually violent, criminals are sometimes portrayed as the victims of circumstance, because the stories are told from their point of view.

Realism is going on the bases that you are just trying to make as relatable to the audiences as possible usually using a lot on natural lighting and realistic shots .