Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latin dux
← Proto-Indo-European *dewk- (root)
← Proto-Indo-European (inherited)
← Proto-Indo-European *dewk- (mention)
← Proto-Italic *duks (inherited)
← Latin dūcō (mention)

→ English ducat (mention)
→ English duke (derived)
→ English duchy (derived)
→ English grand duke (mention)
→ English doge (mention)
→ English Il Duce (derived)
→ English dux (borrowed)
→ English archduchy (mention)
→ English dux bellorum (mention)
→ Catalan duc (derived)
→ Coptic ⲇⲟⲩⲝ (derived)
→ Middle English duke (derived)
→ Middle English duk (derived)
→ Spanish dux (borrowed)
→ Spanish duque (derived)
→ Spanish ducado (derived)
→ French ducat (mention)
→ French doge (mention)
→ French duc (borrowed)
→ French duché (mention)
→ Old French ducat (mention)
→ Old French duc (borrowed)
→ Friulian duche (derived)
→ Friulian dûs (inherited)
→ Friulian ducât (derived)
→ Irish diúc (derived)
→ Ancient Greek δούξ (borrowed)
→ Hindi ड्यूक (derived)
→ Hungarian dózse (mention)
→ Armenian դուքս (mention)
→ Italian duce (borrowed)
→ Italian doge (derived)
→ Italian ducato (inherited)
→ Italian duca (derived)
→ Italian dogado (derived)
→ Italian Duce (inherited)
→ Latin educo (prefix)
→ Latin ducatus (mention)
→ Latin archidux (prefix)
→ Latin ducalis (suffix)
→ Latin condux (prefix)
→ Latin ducissa (suffix)
→ Latin bellidux (mention)
→ Norman du (inherited)
→ Norman duc (borrowed)
→ Occitan duc (inherited)
→ Old Occitan duc (borrowed)
→ Portuguese duque (derived)
→ Portuguese ducado (mention)