fettler vs wrangler

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. 

wrangler

noun
  • Someone who wrangles or corrals. 

  • A cowboy who takes care of tourists. 

  • A student who has completed the third year of the mathematical tripos with first-class honours. 

  • An animal handler or trainer. 

  • A special education teacher. 

  • A cowboy who takes care of saddle horses. 

  • A brawler or disputant. 

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