Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
durícia
←
Catalan
duresa
(doublet)
←
Latin
dūritia
(borrowed)
→
Catalan
dur
(link)
→
Catalan
duresa
(doublet)