Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latin Petrus
← Ancient Greek Πέτρος (derived)

→ English Peter (derived)
→ Afrikaans Pieter (derived)
→ Old English Petrus (borrowed)
→ Asturian Pedru (inherited)
→ Breton Per (derived)
→ Catalan Pere (inherited)
→ Cebuano Peter (derived)
→ Cebuano Pedro (derived)
→ Welsh Pedr (derived)
→ Danish Peter (derived)
→ Danish Per (derived)
→ German Peter (borrowed)
→ German Petrus (derived)
→ Middle English Peter (derived)
→ Spanish Pedro (inherited)
→ Finnish Pekka (derived)
→ Finnish Pekko (derived)
→ Faroese Petur (derived)
→ Faroese Pætur (derived)
→ French Pierre (inherited)
→ Friulian Pieri (inherited)
→ Irish Peadar (derived)
→ Scottish Gaelic Peadar (derived)
→ Galician Pereira (mention)
→ Manx Peddyr (derived)
→ Indonesian Petrus (learned borrowing)
→ Italian Pietro (inherited)
→ Italian Piero (inherited)
→ Ingrian Petteri (derived)
→ Latin Petropolis (affix)
→ Lithuanian Petras (derived)
→ Dutch Peter (derived)
→ Dutch Petrus (derived)
→ Dutch Pieter (derived)
→ Norwegian Peter (derived)
→ Norwegian Per (derived)
→ Occitan Pèire (derived)
→ Portuguese Pedro (inherited)
→ Portuguese Pero (inherited)
→ Romanian Sâmpietru (mention)
→ Scots Peter (derived)