Greco- vs Hellenic

Greco-

prefix

Greek.

Hellenic

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.

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.

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