circular vs literature

circular

noun
  • Synonym of flyer: a printed advertisement, directive, or notice intended for mass circulation. 

  • A shuttle bus with a circular route. 

verb
  • To extend in a circular direction. 

  • To distribute circulars to or at. 

adj
  • Referring back to itself, so as to prevent computation or comprehension; infinitely recursive. 

  • Circuitous or roundabout. 

  • Of or relating to a circle. 

  • Distributed to a large number of persons. 

  • In the shape of, or moving in a circle. 

literature

noun
  • 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. 

  • Written fiction of a high standard. 

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