jitterbug vs shimmy

jitterbug

verb
  • To dance the jitterbug. 

noun
  • An uptempo jazz or swing dance which embellishes on the two-step pattern and frequently incorporates acrobatic style swing steps. 

  • A jazz musician or aficionado. 

  • Synonym of diddley bow (“type of stringed instrument”) 

  • A nervous or jittery person. 

shimmy

verb
  • To shake the body as if dancing the shimmy. 

  • To vibrate abnormally, as a broken wheel. 

  • To perform a shimmy (dance movement involving thrusting the shoulders back and forth alternately). 

  • To move across a narrow ledge, either by hanging from it or by strafing on it along the wall. 

  • To climb something (e.g. a pole) gradually (e.g. using alternately one's arms then one's legs). 

noun
  • A dance that was popular in the 1920s. 

  • An abnormal vibration, especially in the wheels of a vehicle. 

  • A dance movement involving thrusting the shoulders back and forth alternately. 

  • A sleeveless chemise. 

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