Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
raig
←
Catalan
radi
(doublet)
←
Spanish
rayo
(cognate)
←
French
rai
(cognate)
←
Italian
raggio
(cognate)
←
Latin
radius
(inherited)
←
Occitan
rai
(cognate)
→
Catalan
rai
(mention)
→
Catalan
radi
(doublet)
→
Catalan
radi
(link)