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

→ Welsh glas (inherited)
→ Basque gorosti (cognate)
→ Irish glas (inherited)
→ Scottish Gaelic glas (inherited)
→ Manx glass (inherited)
→ Cornish glas (inherited)
→ Latin glastum (derived)
→ Primitive Irish ᚔᚅᚓᚊᚐᚌᚂᚐᚄ (mention)
→ Old Irish glas (inherited)