Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
rossio
←
Galician
roussio
(cognate)
←
Galician
resío
(mention)
←
Latin
residuus
(inherited)
←
Portuguese
resíduo
(doublet)
←
Old Portuguese
rossio
(inherited)
←
Old Portuguese
ressio
(mention)
→
Galician
resío
(cognate)
→
Portuguese
resíduo
(doublet)