Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
atge
←
Middle French
âge
(borrowed)
←
Old French
aage
(derived)
←
Latin
aetās
(inherited)
←
Old Occitan
*edatge
(inherited)
→
Occitan
maridatge
(suffix)
→
Occitan
dalhatge
(suffix)