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

→ Breton den (inherited)
→ Welsh dyn (inherited)
→ Irish duine (inherited)
→ Scottish Gaelic duine (inherited)
→ Manx dooinney (inherited)
→ Cornish den (inherited)
→ Old Irish duine (inherited(sga/mga))
→ Old Irish duine (inherited)