classics vs literature

classics

noun
  • Synonym of classical studies: the study of Ancient Greek and Latin, their literature, history etc. 

literature

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

  • The body of all written works. 

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

  • Written fiction of a high standard. 

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