Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
coer
→
French
cœur
(mention)
→
Norman
tchoeu
(mention)
→
Norman
tchoeur
(mention)
→
Polish
kier
(mention)