Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
Байка́л
→
English
Baikal
(borrowed)
→
Portuguese
Baical
(borrowed)
→
Russian
Забайкалье
(confix)
→
Russian
байкальский
(affix)