resonant vs reverberatory

resonant

adj
  • Resounding, echoing. 

  • Adjusted as to dimensions so that currents or electric surgings are produced by the passage of electric waves of a given frequency. 

noun
  • A sonorant vowel or consonant. 

reverberatory

adj
  • Of, pertaining to, or employing reverberation or deflection 

noun
  • A reverberatory furnace. 

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