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

→ English Vercingetorix (derived)
→ English feuterer (derived)
→ Welsh gorau (mention)
→ Welsh gor- (inherited)
→ Irish for- (inherited)
→ Irish foirgneamh (mention)
→ Cornish gor- (inherited)
→ Old Irish for- (inherited)