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

→ English rue (inherited)
→ Old English hreow (inherited)
→ German Reue (inherited)
→ Middle English rewe (inherited)
→ Hunsrik Rei (inherited)
→ Luxembourgish Rei (inherited)
→ Dutch rouw (inherited)