Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ancient Greek
νέρθεν
←
Ancient Greek
-θεν
(affix)
←
Proto-Indo-European
*h₁en-
(root)
←
Proto-Indo-European
*h₁én
(derived)