Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
vos
←
Latin
vōs
(inherited)
→
French
vos
(inherited)
→
French
vous
(inherited)
→
Middle French
vous
(inherited)
→
Walloon
vos
(inherited)