Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh rhwyd
Proto-Brythonic *rruɨd (inherited)
Latin rēte (derived)
Middle Welsh rwyt (inherited)

Welsh rhwydwaith (compound)
Welsh mewnrwyd (affix)
Welsh pêl-rwyd (compound)
Welsh rhwydo (affix)
Welsh rhyngrwyd (affix)