Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
entuziasmigar
←
Esperanto
entuziasmigi
(borrowed)
←
Ido
entuziasmo
(suffix)
←
Ido
igar
(suffix)