Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
éthéré
←
French
éther
(suffix)
←
French
é
(suffix)
←
Ancient Greek
αἰθέριος
(mention)
←
Latin
aetherius
(mention)
→
Romanian
eterat
(borrowed)