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