Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Esperanto
eterna
←
Latin
aeternus
(borrowed)
→
Esperanto
eterneco
(affix)
→
Esperanto
Eternulo
(affix)
→
Ido
eterna
(derived)