double bass vs fiddlestick

double bass

noun
  • The largest stringed instrument of the violin family. 

  • The deepest of all male voices. 

fiddlestick

noun
  • A bow used to play the fiddle. 

  • One of a pair of sticks, similar to drumsticks, used by a second player to percuss the strings of a fiddle while the main player plays via bow. 

  • A whit; a jot. 

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