The term 'FUJI FLOW' is a combination of two words, 'FUJI' and 'FLOW'. The crossword solutions for this term are 'LAVA' (4 letters) and 'MOLTENLAVA' (10 letters). LAVA is molten rock that is expelled from a volcano during an eruption. It is composed of various minerals and gases and can reach temperatures of up to 1, 250 degrees Celsius. Molten LAVA is the liquid form of LAVA that is expelled from a volcano. It is extremely hot and can cause significant damage to anything it comes into contact with.