Charcoal is considered a better fuel than wood because:
(i) It has high calorific value.
(ii) It does not produce any smoke.
Disadvantages:
(i) 1 kg of wood on destructive distillation produces only 0.25 kg of charcoal making it an expensive fuel.
(ii) For production of charcoal, more and more trees would have to be cut down which causes deforestation and disturbs the ecological balance of the Earth.
