tohu-bohu vs upheaval

tohu-bohu

noun
  • Chaos, disorder, confusion. 

upheaval

noun
  • A sudden violent upset, disruption or convulsion. 

  • Disruptive change, from one state to another. 

  • The process of being heaved upward, especially the raising of part of the earth's crust. 

How often have the words tohu-bohu and upheaval occurred in a corpus of books? (source: Google Ngram Viewer )