Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
Târcov
←
Old Church Slavonic
Тръковъ
(borrowed)
←
Old Church Slavonic
тръкъ
(affix)
←
Old Church Slavonic
-овъ
(affix)