Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*zamъka
→
Bulgarian
замък
(cognate)
→
Serbo-Croatian
zamka
(inherited)
→
Serbo-Croatian
замка
(inherited)