Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
крѣпость
←
Old Church Slavonic
крѣпъ
(suffix)
←
Old Church Slavonic
ость
(suffix)
←
Proto-Slavic
*krěpostь
(inherited)
→
Bulgarian
крепост
(inherited)