Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
frontera
←
Catalan
front
(suffix)
←
Catalan
era
(suffix)
←
Spanish
frontera
(cognate)
←
French
frontière
(cognate)
←
Italian
frontiera
(cognate)
←
Portuguese
fronteira
(cognate)
→
Catalan
fronterer
(suffix)
→
Spanish
frontera
(cognate)
→
Portuguese
fronteira
(cognate)