Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
opérer
←
French
œuvrer
(doublet)
←
Latin
operārī
(borrowed)
←
Latin
operor
(mention)
→
French
ouvrer
(mention)
→
French
œuvrer
(doublet)
→
French
ouvrable
(mention)
→
French
opérable
(suffix)
→
Romanian
opera
(borrowed)