THE IDIOM, “It’s all Greek to me,” finally makes sense. It has a comparatively large lexical distance from other European languages!
This map is a visual representation of how far apart European languages are when comparing differences in their overall vocabulary. Take a look to better understand how many people speak each language, which group it belongs to, and how different it is from the languages of neighboring countries.
Also, check out the original post at Etymologikon for more details on this study. 