Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
klapo
←
German
Klappe
(derived)
←
Esperanto
klapo
(derived)
←
French
clapet
(derived)
←
Russian
кла́пан
(derived)