Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
ranço
←
Latin
rancidus
(inherited)
←
Portuguese
râncido
(doublet)
←
Old Portuguese
ranço
(inherited)
→
Portuguese
râncido
(doublet)