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

→ Breton mil (inherited)
→ Welsh mil (inherited)
→ Irish míol (inherited)
→ Scottish Gaelic mial (inherited)
→ Galician miñoca (derived)
→ Galician mioca (derived)
→ Manx meeyl (inherited)
→ Portuguese minhoca (derived)
→ Old Irish míl (inherited)