Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
cálido
←
Latin
calidus
(borrowed)
←
Latin
callidus
(borrowed)
←
Portuguese
caldo
(doublet)
→
Portuguese
caldo
(doublet)