Genre and sub-genre

Genre is a way of categorizing films. I.e Thriller, Comedy, Action, etc. This is useful for institutions because it makes it easier for producers to set their product out in the market for a certain audience. It also helps the audience in their choice to as what film they'd like to see.

Sub-Genre is the added genre to the main one. I.e Thriller/Comedy, Romantic/Comedy etc. This again sets a easier system for the producers and audiences in terms of viewings. An example of this is the film 'Friends with benefits' is a Romantic/Comedy film.

Another example is the film 'Deja Vu' which is an Action/Thriller, this had a slight influence on my film opening because it showed certain aspects of how to create tension and create an appeal to the audience. 

Another example of a sub-genre Thriller is 'He Loves Me, He Loves Me Not.' Although the opening seems all Romantic and such, the real genre is Thriller. From the opening, it'll be hard for the audience to gather that.