squirm vs twerk

squirm

verb
  • To twist one's body with snakelike motions. 

  • To twist in discomfort, especially from shame or embarrassment. 

  • To evade a question, an interviewer etc. 

noun
  • A twisting, snakelike movement of the body. 

twerk

verb
  • To move the body in a sexually suggestive twisting or gyrating fashion, especially as a dance. 

  • To twitch or jerk. 

noun
  • A fitful movement similar to a twitch or jerk. 

  • A dance involving sexual movements of the hips and buttocks. 

  • An abrupt call, such as that made by the California quail. 

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