Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*jьz koni
→
Old Church Slavonic
искони
(inherited)
→
Macedonian
искон
(inherited)
→
Russian
искони
(inherited)
→
Serbo-Croatian
iskon
(inherited)