Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
meur
←
Latin
mātūrus
(inherited)
→
English
demure
(derived)
→
French
mûr
(inherited)
→
Norman
meux
(mention)