Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
carreu
←
Catalan
cairell
(doublet)
←
French
carreau
(derived)
←
Latin
quadrus
(derived)
←
Occitan
carrèu
(borrowed)