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

→ Esperanto por (doublet)
→ Esperanto pere (suffix)
→ Esperanto per- (back-formation)
→ Esperanto persone (affix)
→ Esperanto perforto (affix)