Tungsten. 11 connected concepts: Divertor (related to), Heavy metals (related to), Transition metal (related to), Gas tungsten arc welding (related to), Scheelite (related to), Incandescent light bulb (related to), Tungsten carbide (related to), Wolframite (related to), Refractory metals (related to), Neutron (related to), Atomic nucleus (related to).