Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Icelandic bak
Proto-Germanic *baką (inherited)
Old Norse bak (inherited)

Icelandic baka (mention)
Icelandic bakpoki (mention)
Icelandic skjaldbaka (compound)
Icelandic ber er hver að baki, nema sér bróður eigi (mention)
Icelandic bakuggi (compound)
Icelandic baks (mention)
Icelandic bakskaut (prefix)
Icelandic bakvörður (compound)
Icelandic bakgrunnur (affix)
Dutch bak (cognate)