Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
ruído
←
Galician
ruxido
(doublet)
←
Latin
rugītus
(inherited)
←
Old Portuguese
roydo
(inherited)
→
Galician
ruxido
(doublet)
→
Galician
ruideira
(suffix)