Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
cert
←
Latin
certus
(inherited)
←
Old Occitan
(inherited)
→
Catalan
certament
(suffix)
→
Catalan
certesa
(suffix)
→
Catalan
encertar
(affix)