Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Icelandic rúm
Proto-Germanic *rūmą (derived)
Proto-Indo-European *rowǝ- (derived)
Old Norse rúm (derived)

Icelandic rúmföt (affix)
Icelandic rúmteppi (affix)
Icelandic rúmfræði (affix)
Icelandic rúmgóður (compound)
Icelandic barnarúm (affix)
Icelandic rúmmetri (compound)
Icelandic rúmsentimetri (affix)