Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
âcre
←
French
aigre
(doublet)
←
Latin
acer
(borrowed)
→
French
aigre
(doublet)
→
French
âcrement
(suffix)