Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ukrainian
олігархія
←
Belarusian
аліга́рхія
(cognate)
←
Ancient Greek
ὀλιγαρχία
(derived)
←
Polish
oligarchia
(cognate)
←
Russian
олига́рхия
(cognate)