dissimulation vs mendacity

dissimulation

noun
  • The act of concealing the truth; hypocrisy or deception. 

  • Hiding one's feelings or intentions. 

mendacity

noun
  • A deceit, falsehood, or lie. 

  • The fact or condition of being untruthful; dishonesty. 

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