Japayuki-san vs treddle

Japayuki-san

noun
  • A Filipina who travels to Japan to work as an entertainer, with implications of prostitution. 

treddle

noun
  • A prostitute; strumpet. 

  • The dung of sheep or hares. 

How often have the words Japayuki-san and treddle occurred in a corpus of books? (source: Google Ngram Viewer )