fiddler vs twiddler

fiddler

noun
  • One who fiddles; a cheat. 

  • A burrowing crab of the genus Gelasimus, of many species. The male has one claw very much enlarged, and often holds it in a position similar to that in which a musician holds a fiddle. 

  • A large species of cicada, Macrotristria angularis, of eastern Australia; cherry nose. 

  • The common European sandpiper (Actitis hypoleucos); so called because it habitually wags its tail up and down resembling the back and forth movement of a fiddler. 

  • One who plays the fiddle. 

twiddler

noun
  • One who twiddles. 

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