A smithing table is a utility block in Minecraft that has two functions. First, it can upgrade gear from diamond to netherite, which is the highest tier in the game. Second, it serves as a worksite block for the toolsmith. Toolsmiths can convert mined items into emeralds and provide enchanted diamond axes, pickaxes, and shovels.
To craft a smithing table, you need two iron ingots and four wooden planks of any type. You can place the two iron ingots at the top of the crafting grid, next to each other, and the four wooden planks below them in a 2x2 square. The recipe for a smithing table is relatively cheap.
Smithing tables can only be used to craft one type of item, and the tools that are on the smithing table are unobtainable in the game. They are not better or worse than an anvil, they simply have different functions. To use a smithing table, you need to place a diamond tool or armor in one slot and a netherite ingot in the other. Then, you can upgrade your diamond equipment into netherite.