Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Scottish Gaelic uisge
Proto-Celtic *udenskyos (inherited)
Proto-Indo-European *wódr̥ (derived)
Old Irish uisce (inherited)

Estonian vesi (cognate)
Scottish Gaelic uisge-beatha (mention)
Scottish Gaelic creagag-uisge (mention)