Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Occitan
bou
←
Latin
bōvem
(inherited)
←
Latin
bōs
(mention)
→
Catalan
bou
(inherited)
→
Occitan
buòu
(inherited)