Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Esperanto helpi
Old English helpan (mention)
English help (mention)
Proto-Germanic *helpaną (mention)
Proto-Indo-European *ḱelp- (mention)

Esperanto help (mention)
Esperanto malhelpi (prefix)
Esperanto helpverbo (affix)
Esperanto malhelpo (affix)