Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
opaque
←
French
ubac
(doublet)
←
Latin
opācus
(borrowed)
→
French
opacifier
(suffix)
→
French
ubac
(doublet)
→
French
opaquement
(suffix)
→
Romanian
opac
(borrowed)
→
Russian
опак
(borrowed)