Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
copaie
←
Bulgarian
копаня
(borrowed)
←
Serbo-Croatian
kopanja
(borrowed)
←
Proto-Slavic
*kopaňa
(derived)
←
Proto-Slavic
*kopati
(mention)
→
Romanian
copăiță
(suffix)