Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
antiqua
←
German
antik
(derived)
←
English
antique
(derived)
←
Esperanto
antikva
(derived)
←
Spanish
antiguo
(derived)
←
French
antique
(derived)
←
Italian
antico
(derived)
←
Latin
antīquus
(derived)
←
Russian
антиква́рный
(derived)