Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Icelandic dúkur
Danish dug (cognate)
Proto-Germanic *dōkaz (inherited)
Norwegian Nynorsk duk (cognate)
Old Norse dúkr (inherited)
Swedish duk (cognate)

English duck (cognate)
Icelandic flaggdúkur (affix)
Icelandic dúkönd (compound)
Icelandic dúkahnífur (affix)