Hellenic vs ancient Greek

Hellenic

name

The Greek language and its dialects from the earliest records (Linear B inscriptions, about 1600-1300 B.C.E.) to the present Modern Greek.

adj

Of or relating to Hellas (Greece) or the Hellenes (Greeks).
Of or relating to the ancient Greek culture and civilization before the Hellenistic period.

ancient Greek

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