Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
nao
←
Galician
nave
(doublet)
←
Latin
navis
(derived)
←
Old Occitan
nau
(borrowed)
←
Portuguese
nau
(cognate)