Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle French
povoir
←
Old French
povoir
(inherited)
←
Old French
pooir
(mention)
←
Old French
poeir
(mention)
→
French
pouvoir
(inherited)