succussion vs tremble

succussion

noun
  • A shaking of the body to ascertain whether there is liquid in the thorax. 

  • The preparation of a diluted substance in homeopathy by vigorously shaking it against an elastic body. 

tremble

noun
  • A shake, quiver, or vibration. 

verb
  • To shake, quiver, or vibrate. 

  • To fear; to be afraid. 

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