Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
Negoi
←
Old Church Slavonic
Нѣгомиръ
(derived)
←
Romanian
Neagu
(affix)
←
Romanian
-oi
(affix)