A torch is essentially ignited butane (like a fancy lighter or Bunsen burner). A flamethrower is ignighted gasoline (or napalm). A flamethrower's flames stick a

A torch is essentially ignited butane (like a fancy lighter or Bunsen burner). A flamethrower is ignighted gasoline (or napalm). A flamethrower's flames stick and have a much further range. A flamethrower is essentially a gasoline/napalm hose / stream with a lighter at the end of it.