Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
eunuque
←
Ancient Greek
εὐνοῦχος
(borrowed)
←
Latin
eunūchus
(borrowed)
→
French
eunuchat
(suffix)
→
Romanian
eunuc
(borrowed)