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

→ English thrall (derived)
→ Old English þræl (derived)
→ Danish træl (inherited)
→ Faroese trælur (derived)
→ Icelandic þræll (derived)
→ Old Norse þræll (derived)
→ Swedish träl (derived)