Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
Marne
←
Proto-Celtic
*dēwos
(mention)
←
Proto-Celtic
*mātīr
(mention)
→
English
Marne
(derived)