Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
covent
←
Latin
conventus
(inherited)
→
English
coven
(derived)
→
English
convent
(derived)
→
English
covent
(derived)
→
French
couvent
(mention)