compositor vs hitcher

compositor

noun
  • A person who sets type; a typesetter. 

  • One who, or that which, composes or sets in order. 

  • A system that puts images together in a buffer (such as individual windows on a desktop) to generate a final display image. 

hitcher

noun
  • An onsetter. 

  • A hitchhiker. 

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