Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dalmatian
radaica
←
Italian
radice
(cognate)
←
Latin
rādīx
(inherited)
←
Occitan
rasiga
(cognate)
←
Sicilian
ràdica
(cognate)
←
Venetian
raixa
(cognate)