fiction vs pork pie

fiction

noun
  • A legal fiction. 

  • Literary type using invented or imaginative writing, instead of real facts, usually written as prose. 

  • A verbal or written account that is not based on actual events (often intended to mislead). 

pork pie

noun
  • A lie. 

  • A shortcrust pie containing chopped pork. 

  • A pork pie hat. 

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