Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Icelandic systir
Proto-Germanic *swestēr (derived)
Proto-Norse ᛊᚹᛖᛊᛏᚨᚱ (derived)
Proto-Indo-European *swésōr (derived)
Old Norse systir (derived)

English sister (cognate)
Alemannic German schweschter (cognate)
Alemannic German Schwöschter (cognate)
Icelandic föðursystir (compound)
Icelandic móðursystir (compound)
Icelandic systursonur (compound)
Icelandic systurdóttir (affix)
Icelandic hálfsystir (affix)