Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Esperanto
vakanteco
←
Esperanto
vakanta
(suffix)
←
Esperanto
-eco
(suffix)
←
Proto-Indo-European
*h₁weh₂-
(root)