literature vs work of fiction

literature

noun
  • Written fiction of a high standard. 

  • The body of all written works. 

  • All the papers, treatises, etc. published in academic journals on a particular subject. 

  • The collected creative writing of a nation, people, group, or culture. 

work of fiction

noun
  • A fictional account; a story. 

  • A fictitious account; an account of events that never took place. 

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