aviation vs flyman

aviation

noun
  • The art or science of making and flying aircraft. 

  • Flying, operating, or operation of aircraft. 

  • Industry that produces aircraft. 

  • A cocktail made with gin, maraschino liqueur, crème de violette and lemon juice 

  • aircraft 

flyman

noun
  • Someone who operates a fly system in a theatre. 

  • Someone who drives the type of coach called a fly. 

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