Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
amarum
←
Catalan
amargor
(cognate)
←
Spanish
amargura
(cognate)
←
French
amertume
(cognate)
←
Occitan
amar
(link)