Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*kert-sna
→
French
Cène
(derived)
→
Portuguese
ceia
(inherited)
→
Romanian
cină
(inherited)
→
Old Portuguese
cẽa
(inherited)