bawd vs whoremistress

bawd

noun
  • A person who keeps a house of prostitution, or procures women for prostitution; a procurer, a madame. 

  • A lewd person. 

whoremistress

noun
  • A woman who runs a brothel, or hires out prostitutes; a madam. 

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