Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Occitan
defendre
←
Old French
defendre
(cognate)
←
Latin
defendō
(derived)
→
Catalan
defendre
(derived)
→
Occitan
defendre
(derived)