Attic vs belletristic

Attic

adj
  • Marked by the qualities that were characteristic of the Athenians; classical; refined. 

  • Relating to Athenian culture or architecture. 

  • Relating to that dialect of Ancient Greek. 

name
  • An ancient Greek dialect spoken in Attica, Euboea, and the northern coastal regions of the Aegean Sea. 

belletristic

adj
  • Of, pertaining to, or having the characteristics of belles-lettres. 

  • Written or appreciated for aesthetic value rather than content 

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