shake hands vs tremble

shake hands

noun
  • an instance of shaking hands; a handshake 

verb
  • To grasp another person's hands as an expression of greeting, farewell, agreement, etc. 

tremble

noun
  • A shake, quiver, or vibration. 

verb
  • To shake, quiver, or vibrate. 

  • To fear; to be afraid. 

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