concoction vs fiction

concoction

noun
  • Something made up, an invention. 

  • A mixture prepared in such a way. 

  • The preparing of a medicine, food or other substance out of many ingredients. 

fiction

noun
  • 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). 

  • A legal fiction. 

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