Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
betão
←
Gaulish
*bitu
(derived)
←
French
béton
(borrowed)
←
Latin
bitūmen
(derived)
←
Portuguese
betume
(doublet)