death knell vs resounding

death knell

noun
  • A sign or omen foretelling the death or destruction of something. 

  • The tolling of a bell announcing death. 

resounding

noun
  • The action of the verb to resound 

adj
  • That causes reverberation. 

  • Emphatic. 

  • Having a deep, rich sound; mellow and resonant. 

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