Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
эффе́кт
→
Ido
efekto
(derived)
→
Russian
эффектный
(affix)
→
Ukrainian
ефект
(cognate)