Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
idiome
←
Ancient Greek
ἰδίωμα
(derived)
←
Ancient Greek
ἰδιούμαι
(derived)
←
Ancient Greek
ἴδιος
(mention)
→
Romanian
idiom
(borrowed)