harlotry vs sexual marketplace

harlotry

noun
  • The trade of a harlot; prostitution. 

sexual marketplace

noun
  • Prostitution. 

  • The way in which people's desirability as sexual or romantic partners is evaluated. 

  • A location or situation in which people are looking for sexual or romantic partners. 

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