Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
komercar
←
English
commerce
(borrowed)
←
Spanish
comerciar
(derived)
←
French
commercer
(derived)
←
Ido
komerco
(suffix)
←
Ido
ar
(suffix)
←
Italian
commerciare
(derived)