lady-killer vs smooth operator

lady-killer

noun
  • An uncaring womanizer. 

  • A man unusually attractive to women. 

smooth operator

noun
  • A skillful, manipulative person, con artist, or clever scoundrel. 

  • A person who accomplishes tasks with efficiency and grace, especially one with verbal skills who is persuasive in interpersonal relationships, negotiation, etc. 

How often have the words lady-killer and smooth operator occurred in a corpus of books? (source: Google Ngram Viewer )