Old Norse kol

← Proto-Germanic *kulą (inherited)

← Proto-Indo-European *gʷol- (derived)

← Proto-Indo-European *ǵwelH- (mention)

→ English Colby (mention)

→ Old English col (cognate)

→ Danish kul (derived)

→ Old High German kol (cognate)

→ Icelandic kol (inherited)

→ Norwegian Bokmål kol (inherited)

→ Norwegian Bokmål kull (derived)

→ Dutch kool (cognate)

→ Norwegian Nynorsk kol (inherited)

→ Norwegian Kolbjørn (mention)

→ Swedish kol (inherited)