Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
mъшъна
→
Romanian
Moșna
(borrowed)
→
Romanian
Mujna
(derived)
→
Romanian
Măgina
(derived)