Stick vs power of attorney

Stick

noun

  • A member of the Official IRA. 

name

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

power of attorney

noun

  • A legal document allowing one person to act as the agent of another. 

  • The legal authorisation of one person to act as the agent of another. 

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