Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
Slavu
←
Bulgarian
Славо
(borrowed)
→
Romanian
Slăvești
(affix)
→
Romanian
Slăveni
(affix)
→
Romanian
Slăvulete
(affix)
→
Romanian
Slăvescu
(affix)
→
Romanian
Slăvilă
(affix)