Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
пляскам
←
Bulgarian
пляс
(affix)
←
Bulgarian
-кам
(affix)
←
Proto-Slavic
*plěskati
(inherited)