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

→ English cheap (mention)
→ German kaufen (derived)
→ Finnish kaupunki (derived)
→ Old High German koufo (inherited)
→ Romanian precupeț (mention)
→ Romanian cupeț (mention)
→ Swedish köpa (mention)
→ Yiddish קויפֿן (mention)