Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
врагъ
←
Proto-Slavic
*vorgъ
(inherited)
→
Old East Slavic
врагъ
(borrowed)
→
Russian
враг
(borrowed)