Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
quatre
←
Latin
quattuor
(inherited)
←
Occitan
catre
(mention)
←
Old Occitan
quatre
(inherited)
→
Occitan
quatren
(affix)