sex labourer vs strumpet

sex labourer

noun
  • Synonym of sex worker 

strumpet

noun
  • A trollop; a whore. 

  • A woman who is very sexually active. 

  • A mistress. 

  • A female prostitute 

  • A female adulterer. 

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