Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
клас
←
French
classe
(borrowed)
←
Latin
classis
(derived)
←
Russian
класс
(borrowed)
←
Proto-Slavic
*kolsъ
(inherited)