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

→ Estonian vaht (derived)
→ Finnish vaahto (derived)
→ Westrobothnian tjwött (inherited)
→ Icelandic þvottur (derived)
→ Old Norse þváttr (inherited)
→ Swedish tvätta (derived)
→ Swedish tvätt (derived)