Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Cornish -es

→ Breton -ed (cognate)
→ Welsh -ed (cognate)
→ Welsh -ed (cognate)
→ Welsh -es (cognate)
→ Cornish dyskadores (affix)
→ Cornish broweghyades (compound)
→ Cornish neuvyores (affix)