Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
douit
←
English
duct
(doublet)
←
Old French
duit
(derived)
←
Latin
ductum
(derived)
←
Norman
douit
(derived)