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

→ English or (inherited)
→ Old English oþþe (derived)
→ Old High German odar (derived)
→ Gothic 𐌰𐌹𐌸𐌸𐌰𐌿 (inherited)
→ Icelandic eða (inherited)
→ Dutch ofte (inherited)
→ Old Saxon eftha (inherited)