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

→ English fack (inherited)
→ Old English fæc (inherited)
→ German Fach (inherited)
→ German -fach (derived)
→ Old High German fah (derived)
→ Luxembourgish Fach (derived)
→ Dutch vak (inherited)
→ Polish fach (derived)
→ Saterland Frisian Fäk (inherited)