Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Esperanto
fakto
←
Proto-Indo-European
*dʰeh₁-
(root)
←
Latin
factum
(derived)
→
Esperanto
fakta
(affix)