Tool

How to Make Tool?
Human + Metal

What Does Tool Make?
+Boiler = Steam Engine
+Brick = House
+Clay = Pottery
+Coconut = Coconut Milk
+Cotton = Thread
+Cow = Meat
+Doctor = Stethoscope
+Earth = Field
+Fish = Fishing Rod
+Glasses = Safety Glasses
+Grass = Lawn Mower
+Hay = Pitchfork
+Human = Engineer
+Light = Flashlight
+Metal = Armor
+Mountain Goat = Cashmere
+Nerd = Computer
+Pig = Meat
+Rain = Umbrella
+Sheep = Wool
+Steel = Armor
+Stone = Statue
+Sun = Solar Cell
+Thread = Fabric
+Time = Clock
+Tree = Wood
+Wood = Wheel
+Wool = Sweater