Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Ido populo
English people (borrowed)
Esperanto popolo (borrowed)
Spanish pueblo (borrowed)
French peuple (borrowed)
Italian popolo (borrowed)
Latin populus (derived)

Ido despopulizar (confix)
Ido populizar (suffix)