Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Icelandic
Danish ro (mention)
Icelandic kyrrð (link)
Icelandic friður (link)
Icelandic næði (link)
Icelandic bolti (link)
Old Norse (derived)

English roo (cognate)
Danish ro (mention)
Alemannic German Ruew (cognate)
Icelandic rólegur (suffix)
Icelandic óró (affix)
Icelandic rökkurró (compound)
Luxembourgish Rou (cognate)