Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
seu
←
Latin
suus
(inherited)
←
Old Portuguese
seu
(inherited)
←
Old Portuguese
sou
(mention)
→
Galician
de seu
(mention)