authorization vs ballot box

authorization

noun
  • An act of authorizing. 

  • (A document giving) formal sanction, permission or warrant. 

  • Permission. 

  • Permission, possibly limited, to spend funds for a specific budgetary purpose. 

ballot box

noun
  • The process or method of voting. 

  • A sealed box with a slit, into which a voter puts a completed voting slip. 

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