giveaway vs pork barrel

giveaway

noun
  • The act of giving something away for free. 

  • An indicator that makes something obvious or apparent. 

  • Something that is given away or handed out for free. 

  • An event at which things are given away for free. 

adj
  • free of charge, at no cost. 

  • very low. 

pork barrel

noun
  • A ready supply of income; one's livelihood. 

  • State funds as assigned for local or regional expenditure; especially, central money used for regional projects which are eyecatching or designed to appeal to voters. 

How often have the words giveaway and pork barrel occurred in a corpus of books? (source: Google Ngram Viewer )