Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh gwyrdd
Proto-Brythonic *gwɨrð (inherited)
Latin viridis (derived)
Old Welsh guird (inherited)
Middle Welsh gwrydd (inherited)

Welsh gwyrddlas (compound)
Welsh gwyrddfaen (compound)
Welsh gwyrddsug (compound)