ballot paper vs polling

ballot paper

noun
  • A voting form; the paper upon which a vote is cast during a ballot. 

polling

noun
  • the process of voting in an election. 

  • The action of taking a poll. 

  • A technique that continually interrogates a peripheral or service to see if it has data to transfer. 

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