Stick vs call girl

Stick

noun
  • A member of the Official IRA. 

name
  • The Chapman Stick, an electric musical instrument devised by Emmett Chapman. 

call girl

noun
  • A female prostitute who is hired by telephone. 

  • A woman who works as a call center agent. (see usage notes) 

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