Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle French
entretenir
←
Old French
entretenir
(inherited)
→
English
entertain
(derived)
→
French
entretenir
(inherited)
→
Middle French
entretenement
(suffix)