Crucible - hot oven used to purify precious metals.
The Crucible is a play about purifying peoples souls.  Characters are accusinof witchcraft and therefore need to be purified.
Crucible - a place or occasion of severe test or trial.
The Crucible is a play about severe test or trial of it's characters.
        
             
        
        
        
Lending a hand to one another person....helping