Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*kъsьnъ
→
Bulgarian
късен
(inherited)
→
Russian
косный
(inherited)
→
Serbo-Croatian
kasan
(inherited)
→
Serbo-Croatian
касан
(inherited)