Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
costar
←
Catalan
constar
(doublet)
←
Latin
constāre
(inherited)
←
Latin
constō
(mention)
←
Old Occitan
costar
(inherited)
→
Catalan
constar
(doublet)