Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
arzón
←
Spanish
arzón
(cognate)
←
Latin
*arciō
(inherited)
←
Latin
arcus
(mention)
←
Portuguese
arção
(cognate)
←
Old Portuguese
arçon
(inherited)