twerk vs waver

twerk

verb
  • To twitch or jerk. 

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

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. 

waver

verb
  • To shake or tremble, as the hands or voice. 

  • To sway back and forth; to totter or reel. 

  • To fluctuate or vary, as commodity prices or a poorly sustained musical pitch. 

  • To falter; become unsteady; begin to fail or give way. 

  • To be indecisive between choices; to feel or show doubt or indecision; to vacillate. 

  • To flicker, glimmer, quiver, as a weak light. 

noun
  • Someone who specializes in waving (hair treatment). 

  • Someone who waves, enjoys waving, etc. 

  • An act of wavering, vacillating, etc. 

  • A tool that accomplishes hair waving. 

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