Minecraft wiki entry for Netherite, associated text: Ancient Debris − a rare blast-resistant block found in the Nether that can be smelted into Netherite Scraps. Ancient debris are most frequently found at y-level 15-21. Like most netherite-related items, a diamond or netherite pickaxe is needed for the item to drop.
Netherite Scrap − an item obtained by smelting ancient debris in a furnace or blast furnace with fuel. Netherite Scraps can also be found as loot inside a Bastion Remnant − Ancient Debris, Netherite Scrap or Netherite Ingots can be found in this structure.
Netherite Ingot − an item created by combining 4 netherite scraps and 4 gold ingots, used for crafting and smithing.
Block of Netherite − a block used for decoration, beacon bases, and compact netherite ingot storage. It is blast resistant and can be moved with pistons.