chaos vs imperturbability

chaos

noun
  • Any state of disorder; a confused or amorphous mixture or conglomeration. 

  • The unordered state of matter in classical accounts of cosmogony. 

  • A behaviour of iterative non-linear systems in which arbitrarily small variations in initial conditions become magnified over time. 

  • One of the two metaphysical forces of the world in some fantasy settings, as opposed to law. 

imperturbability

noun
  • A state of calm, unruffled self-assurance; aplomb, composure. 

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