Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
слой
←
Bulgarian
с-
(prefix)
←
Bulgarian
лой
(prefix)
←
Proto-Slavic
*sъlojь
(inherited)
→
Romanian
sloi
(derived)