concupiscence vs infatuation

concupiscence

noun
  • An ardent desire, especially sexual desire; lust. 

  • the desire of a person's lower appetite, contrary to reason, which subjugates and inclines them to experience temptation and to give in to sin, due to the Fall and original sin. 

infatuation

noun
  • An immensely strong love or sexual attraction. 

  • Something which infatuates. 

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