Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
oingnun
←
Latin
unio
(inherited)
→
French
oignon
(inherited)
→
Middle French
oingnon
(inherited)
→
Norman
ouongnon
(inherited)
→
Norman
ouagniaon
(inherited)