Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Romanian
pleșuv
←
Bulgarian
плешив
(borrowed)
←
Proto-Slavic
*рlěšь
(derived)
→
Romanian
pleșuvie
(suffix)
→
Romanian
pleșuvi
(affix)