Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
ubac
←
English
opaque
(doublet)
←
French
ubac
(borrowed)
←
Latin
opācus
(derived)
←
Occitan
ubac
(derived)
→
English
opaque
(doublet)