art union vs raffle

art union

noun
  • A raffle run to raise money for a charity. 

  • An organisation formed for the purpose of educating the general public about art and supporting artists. 

raffle

noun
  • A drawing, often held as a fundraiser, in which tickets or chances are sold to win a prize. 

  • refuse; rubbish 

verb
  • To participate in a raffle. 

  • To award something by means of a raffle or random drawing, often used with off. 

How often have the words art union and raffle occurred in a corpus of books? (source: Google Ngram Viewer )