Persian زغال

← Irish gual (cognate)

← Proto-Germanic *kulą (cognate)

← Proto-Indo-Iranian *ȷ́ar- (inherited)

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

← Proto-Iranian *jar- (inherited)

→ English coal (cognate)

→ Arabic زوقال (borrowed)

→ Armenian զողալ (derived)

→ Ossetian ӕвзалы (cognate)