Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Indo-European *piHweryon-

→ Breton Iwerzhon (inherited)
→ Welsh Iwerddon (inherited)
→ Irish Éire (inherited)
→ Scottish Gaelic Èirinn (derived)
→ Ancient Greek Ἰουερνία (derived)
→ Cornish Iwerdhon (inherited)
→ Latin Hibernia (derived)
→ Middle Irish Ériu (inherited)
→ Old Irish Ériu (inherited)