Minecraft wiki entry for Mechanics, associated text: Anvil mechanics: These mechanics allow players to repair and/or combine two items, to give an item a custom name, or to crush entities that walk beneath anvils while they are falling.
Enchanting mechanics: These mechanics allow players to use an enchanting table at their maximum potential through the usage of bookshelves.
Nether portal mechanics: These mechanics allow players to use Nether portals to efficiently and accurately travel between the Overworld and Nether dimensions.
Redstone mechanics: The redstone mechanics allow players to build and use complex devices in-game, composed of multiple interacting blocks and entities.
Redstone circuits: Basic types of sub-mechanisms used for event processing, logic, and interaction with the environment.
Redstone components: Any component that makes possible to create mechanisms.
Block update detector: A BUD switch is a redstone mechanism that uses quirks in the game in order to detect changes in nearby blocks.
Quasi-connectivity‌[Java Edition only]: A property of dispensers, droppers, and pistons that allows them to be activated by anything that would activate the space above them, no matter what is actually in that space.