niggle vs violin

niggle

verb
  • To fidget, fiddle, be restless. 

  • To use, spend, or do in a petty or trifling manner. 

  • To dwell too much on minor points or on trifling details. 

noun
  • A minor complaint or problem. 

violin

verb
  • To play on, or as if on, a violin. 

noun
  • Any instrument of the violin family, always inclusive of violins, violas, and cellos and sometimes further including the double bass. 

  • A small unfretted stringed instrument with four strings tuned (lowest to highest) G-D-A-E, usually held against the chin and played with a bow. 

  • The position of a violinist in an orchestra or group. 

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