Ancient Greek vs purist Greek

Ancient Greek

noun

A native or inhabitant of Ancient Greece.

adj

Of or relating to Ancient Greece.

name

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

purist Greek

noun

Greek which is used in an archaistically, recalling one which is of a historical, Ancient or Classical style.

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