Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
kalma
←
English
calm
(borrowed)
←
French
calme
(derived)
←
Italian
calmo
(derived)
→
Ido
kalmeskar
(suffix)
→
Ido
kalmigar
(suffix)