commercial vs documentary

commercial

adj
  • Of or pertaining to commerce. 

  • Designating such an airplane flight. 

  • Designating an airport that serves passenger and/or cargo flights. 

noun
  • A male prostitute. 

  • A commercial trader, as opposed to an individual speculator. 

  • An advertisement in a common media format, usually radio or television. 

documentary

adj
  • Of, related to, or based on documents. 

  • Which serves to document (record and:or illustrate) a subject. 

  • Presented objectively without the insertion of fictional matter. 

noun
  • A film, TV program, publication etc. which presents a social, political, scientific or historical subject in a factual or informative manner. 

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