fettler vs trickster

fettler

noun
  • Someone who fiddles or tinkers with things. 

  • A person who maintains railway lines. 

  • A friend or mate 

  • An ostler; one who looks after the horses in a mine. 

  • Someone whose job is to sand and grind small imperfections from metal and ceramic castings. 

trickster

noun
  • One who plays tricks or pranks on others. 

  • A fraud (person who performs a trick for the purpose of unlawful gain). 

  • Any of numerous figures featuring in various mythologies and folk traditions, who use guile and secret knowledge to challenge authority and play tricks and pranks on others; any similar figure in literature. 

  • One who performs tricks (parts of a magician' act or entertaining difficult physical actions). 

  • An impish or playful person. 

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