Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Pontic Greek
εγώ
←
Greek
εγώ
(mention)
←
Ancient Greek
ἐγώ
(inherited)
←
Proto-Indo-European
*éǵh₂
(inherited)