Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
radi
←
Catalan
raig
(doublet)
←
Catalan
raig
(link)
←
Latin
radius
(borrowed)
←
Latin
radium
(borrowed)
→
Catalan
raig
(doublet)