Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
chastaignier
←
Old French
chastaigne
(suffix)
←
Old French
ier
(suffix)
→
French
châtaignier
(inherited)
→
Middle French
chastaignier
(inherited)