Casanova vs lady's man

Casanova

noun
  • A man considered romantic and gallant, especially one who gives amorous attentions to women. 

  • A promiscuous, philandering man. 

name
  • A surname from the Romance languages, equivalent to English Newhouse. 

lady's man

noun
  • A man who attracts women and enjoys their company. 

  • A womanizer. 

How often have the words Casanova and lady's man occurred in a corpus of books? (source: Google Ngram Viewer )