Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old English niþer
Proto-Germanic *niþer (inherited)
Old High German nidar (cognate)
Proto-Indo-European *ni- (mention)
Old Norse niðr (cognate)

English nether (mention)
English nether (mention)
English nether- (mention)
Old English bineoþan (mention)
Old English niþer- (mention)
Old English niþerlic (suffix)
Old Norse niðr (cognate)