Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
neptunium
→
French
neptunate
(suffix)
→
French
neptuneux
(suffix)
→
French
neptunique
(suffix)
→
Romanian
neptuniu
(borrowed)