Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
rajar
←
Catalan
radiar
(doublet)
←
Latin
radio
(derived)
←
Old Occitan
rayar
(derived)
←
Old Occitan
rajar
(mention)
→
Catalan
rajada
(mention)