leeriness vs sophistication

leeriness

noun
  • The property of being leery, suspiciousness, distrustfulness. 

sophistication

noun
  • Falsification or contamination. 

  • Ability to deal with complexity. 

  • Enlightenment or education. 

  • Cultivated intellectual worldliness; savoir-faire. 

  • Deceptive logic; sophistry. 

  • Complexity. 

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