Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
seing
←
French
signe
(doublet)
←
Old French
seing
(inherited)
←
Latin
signum
(inherited)
→
French
signe
(doublet)