Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
egua
→
French
eau
(mention)
→
Middle French
eau
(mention)
→
Gallo
iaou
(mention)
→
Walloon
aiwe
(mention)