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

English shall (mention)
Alemannic German solle (cognate)
Icelandic fyrr skal ég dauður liggja (mention)
Icelandic skaltu (mention)