tremble vs vibration

tremble

noun
  • A shake, quiver, or vibration. 

verb
  • To shake, quiver, or vibrate. 

  • To fear; to be afraid. 

vibration

noun
  • The act of vibrating or the condition of being vibrated. 

  • A single complete vibrating motion. 

  • An instinctively sensed emotional aura or atmosphere. 

  • A vibrational energy of spiritual nature through which mediumistic and other paranormal phenomena are conveyed or affected. 

  • Any periodic process, especially a rapid linear motion of a body about an equilibrium position. 

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