Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
arç
←
Asturian
artu
(cognate)
←
Navarro-Aragonese
arto
(cognate)
→
Catalan
arçot
(affix)