Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Occitan
lop
→
Catalan
llop
(inherited)
→
French
loup
(derived)
→
Middle French
loup
(derived)
→
Occitan
lop
(inherited)