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

→ Breton kant (inherited)
→ Welsh can (inherited)
→ Welsh cant (inherited(cy/en))
→ Irish céad (inherited)
→ Scottish Gaelic ceud (inherited)
→ Manx keead (inherited)
→ Latin candetum (derived)
→ Old Irish cét (inherited)