Ancient Greek vs Katharevousa

Ancient Greek

name
  • Any of the various forms of the Greek language of classical antiquity, particularly the classical Attic dialect used in Athenian literature. 

adj
  • Of or relating to Ancient Greece. 

noun
  • A native or inhabitant of Ancient Greece. 

Katharevousa

name
  • Coordinate terms: Classical Greek, Demotic Greek, Ancient Greek, Koine, purist Greek 

  • A learned, archaising form of Modern Greek, based on Classical Greek and used for formal and official purposes; it was legally displaced as the official language of Greece in 1976 by Demotic Greek. 

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