Babel vs reverberation

Babel

noun
  • A confused mixture of sounds and voices, especially in different languages. 

  • A place or scene of noise and confusion. 

  • A tall, looming structure. 

name
  • The city and tower in the land of Shinar where the confusion of languages took place, according to the Bible. 

reverberation

noun
  • An echo, or a series of overlapping echoes. 

  • The reflection of light or heat; a reflection in, or as though in, a mirror. 

  • A violent oscillation or vibration. 

  • An evolving series of effects resulting from a particular event; a repercussion. 

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