Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
cartón
←
Spanish
cartón
(cognate)
←
Galician
carta
(affix)
←
Galician
-ón
(affix)
←
Portuguese
cartão
(cognate)