Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Slavic
*krěpъ
→
Bulgarian
крепост
(mention)
→
Old Church Slavonic
крѣпъ
(inherited)
→
Macedonian
крепост
(mention)
→
Russian
крепость
(mention)