Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
vièlh
←
Latin
vetulus
(inherited)
←
Old Occitan
vielh
(inherited)
→
Catalan
vell
(cognate)
→
Sicilian
vecchiu
(cognate)