A filtered item registry showing diamond-related Java Edition IDs. Recipes, loot tables, advancements, predicates, tags, and functions all refer to game content by resource location. Red wool, once represented through a block number plus a data value, became the descriptive minecraft:red_wool. The item ID minecraft:diamond_sword remained valid, but the structure used to attach extra item data in commands moved from the older tag-based form to item components. They give game data publishable names, keep unrelated types from being confused, and let commands, datapacks, and community tools describe the same content without sharing an implementation.