Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
ла́герь
→
Bulgarian
лагер
(borrowed)
→
Russian
лагерный
(affix)
→
Russian
пионерлагерь
(affix)