Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
conjecture
←
Latin
coniectūra
(borrowed)
→
French
conjecturer
(suffix)
→
Dutch
conjectuur
(borrowed)
→
Romanian
conjectură
(borrowed)