Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
comprar
←
Latin
comparāre
(inherited)
←
Latin
comparō
(mention)
←
Old Occitan
comprar
(inherited)
→
Catalan
comprador
(suffix)
→
Catalan
compra
(mention)
→
Catalan
comprable
(suffix)