filament vs film

filament

noun
  • A fine thread or wire. 

  • A continuous object, limited in length only by its spool, and not cut to length. 

  • The stalk of a flower stamen, supporting the anther. 

  • Such a wire, as can be heated until it glows, in an incandescent light bulb or a thermionic valve. 

  • A massive, thread-like structure, such as those gaseous ones which extend outward from the surface of the sun, or such as those (much larger) ones which form the boundaries between large voids in the universe. 

film

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

  • A medium used to capture images in a camera. 

  • 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. 

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

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 filament and film occurred in a corpus of books? (source: Google Ngram Viewer )