Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Esperanto kun
← Spanish con (mention)
← Latin cum (borrowed)

→ Esperanto kuna (affix)
→ Esperanto kunveni (prefix)
→ Esperanto kunulo (suffix)
→ Esperanto kun- (mention)
→ Esperanto kuntiri (prefix)
→ Esperanto kunludi (prefix)