Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
feu
←
Catalan
feudal
(link)
←
Proto-Germanic
*fehu
(derived)
←
Old Occitan
feu
(derived)
→
Latin
feudum
(cognate)