Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
Потёмкин
←
Russian
Потёмка
(mention)
←
Russian
потёмки
(mention)
←
Russian
по-
(mention)
←
Russian
тёмный
(mention)
←
Russian
-ка
(mention)
←
Russian
-ин
(mention)
←
Russian
Потёма
(mention)
←
Russian
Потёмка
(mention)
←
Proto-Slavic
*tьmьnъ
(inherited)