Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
castell
←
Catalan
castell
(borrowed)
←
English
castellum
(doublet)
→
English
castle
(doublet)
→
English
château
(doublet)
→
English
castellum
(doublet)