Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Icelandic erfiði
Proto-Germanic *arbaidiją (derived)
Old Norse erfiði (derived)
Old Norse erfaði (mention)

Cimbrian arbat (cognate)
Cimbrian èrbot (cognate)
Icelandic erfiðisvinna (compound)
Icelandic erfiða (affix)