Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Saterland Frisian Wulke
English welkin (link)
Proto-Germanic *wulkaną (derived)
Old Frisian wulken (derived)
Old Frisian wolken (mention)

Saterland Frisian wulkich (suffix)
Saterland Frisian wulkenloos (suffix)