Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
savar
←
Spanish
saber
(borrowed)
←
French
savoir
(borrowed)
←
Proto-Indo-European
*sep-
(derived)
←
Italian
sapere
(borrowed)
←
Latin
sapiō
(derived)
→
Ido
presavigar
(confix)
→
Ido
saveskar
(suffix)