pander vs souteneur

pander

noun
  • A person who furthers the illicit love-affairs of others; a pimp or procurer. 

  • One who ministers to the evil designs and passions of another. 

  • An offer of illicit sex with a third party. 

  • An illicit or illegal offer, usually to tempt. 

verb
  • To tempt with, to appeal or cater to (improper motivations, etc.); to assist in gratification. 

  • To offer illicit sex with a third party; to pimp. 

souteneur

noun
  • A man who protects a prostitute and lives off her earnings; a pimp. 

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