alloy vs film

alloy

noun
  • An admixture; something added which stains, taints etc. 

  • A metal that is a combination of two or more elements, at least one of which is a metal. 

  • Fusion, marriage, combination. 

verb
  • To impair or debase by mixture. 

  • To mix or combine; often used of metals. 

  • To reduce the purity of by mixing with a less valuable substance. 

film

noun
  • A thin layer of some substance; a pellicle; a membranous covering, causing opacity. 

  • A medium used to capture images in a camera. 

  • A slender thread, such as that of a cobweb. 

  • A visual art form that consists of a sequence of still images preserved on a recording medium to give the illusion of motion; movies generally. 

verb
  • To cover or become covered with a thin skin or pellicle. 

  • To visually record (activity, or a motion picture) in general, with or without sound. 

  • To record (activity, or a motion picture) on photographic film. 

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