[mathieuh]

I think it's more likely that–being an indo-european language–there are frequent cognates between Ancient Greek and other indo-european languages like German.

Here's[0] a massive list of them, and you can see cognates between languages you might not have thought would have them, like Sanskrit, Latin, and Ancient Greek sharing many cognates.

Fascinating subject, definitely.

[0]: https://en.wikipedia.org/wiki/Indo-European_vocabulary