1. 'spoiler'; it's a noun.

http://www.filmclub.org/assets/pdf/FILMCLUB-Review-Tips.pdf

2. Some other film/movie terms.

http://faculty.salisbury.edu/~dtjohnson/filmterms.htm

3.

You can Google or Bing or Baidu or Yahoo with the keywords ' words use to describe a film', only using the English version.