Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
cadièra
←
Catalan
cadira
(cognate)
←
Spanish
cadera
(cognate)
←
French
chaire
(cognate)
←
Ancient Greek
καθέδρα
(derived)
←
Latin
cathedra
(inherited)
←
Occitan
catedra
(mention)
←
Piedmontese
cadrega
(cognate)
←
Old Occitan
(inherited)
→
Catalan
cadira
(cognate)