cinema vs feature film

cinema

noun
  • The art of making films and movies; cinematography 

  • A movie theatre, a movie house 

  • Films collectively. 

  • The film and movie industry. 

feature film

noun
  • Any film produced to be shown in cinemas before being released for home viewing. 

  • The main, full-length film in a cinema program that also included a short film and often a newsreel. As of now, it plays after the trailers. 

How often have the words cinema and feature film occurred in a corpus of books? (source: Google Ngram Viewer )