houseboy vs skivvy

houseboy

noun
  • A non-white adult male domestic servant. 

  • A young male domestic servant, especially in a British colony in former times. 

skivvy

noun
  • A prostitute. 

  • A close-fitting, long-sleeved T-shirt with a rolled collar. 

verb
  • To perform menial work; to do chores, like a servant. 

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