Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Occitan
mort
→
Catalan
mort
(inherited)
→
Catalan
mort
(inherited)
→
Occitan
mort
(inherited)
→
Occitan
mòrt
(inherited)
→
Occitan
mòrt
(inherited)