Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
couto
←
Spanish
coto
(cognate)
←
Galician
couto
(cognate)
←
Latin
cautus
(inherited)
←
Portuguese
cauto
(doublet)
→
Spanish
coto
(cognate)
→
Portuguese
cauto
(doublet)