quelch vs tremble

quelch

verb
  • To make a squelching sound. 

  • To squelch; to eliminate. 

noun
  • A blow; a bang. 

tremble

verb
  • To shake, quiver, or vibrate. 

  • To fear; to be afraid. 

noun
  • A shake, quiver, or vibration. 

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