Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
curtal
←
French
courtault
(derived)
←
French
courtaud
(mention)
←
French
court
(mention)
←
French
-ault
(mention)
→
English
curtail
(mention)