Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Norwegian Bokmål igjen
Old English gegn (cognate)
Old English ongean (mention)
Danish igen (cognate)
German gegen (cognate)
English again (cognate)
Old Norse í gegn (derived)

Norwegian Bokmål varme (link)
Norwegian Bokmål gjen- (mention)