Danish jern

← Proto-Celtic *īsarnom (derived)

← German Eisen (cognate)

← English iron (cognate)

← Irish iarann (cognate)

← Proto-Germanic *īsarną (derived)

← Old Norse járn (derived)

→ Danish håndjern (compound)

→ Danish jernbane (affix)

→ Danish skuffejern (affix)

→ Danish skuffejern (affix)

→ Danish jernalder (affix)

→ Danish støbejern (affix)

→ German Eisen (cognate)

→ Vilamovian ajza (cognate)