infatuation vs weakness

infatuation

noun
  • An immensely strong love or sexual attraction. 

  • Something which infatuates. 

weakness

noun
  • A special fondness or desire. 

  • An inadequate quality; fault 

  • The condition of being weak. 

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