Minecraft Java Edition – Repair and Naming Mechanics Explained

You can enchant books instead, which always puts only a single enchantment on it, and then use the book in the anvil to apply it to a tool or weapon. You do have to go through a lot of books to get exactly the enchantments you're looking for, and it costs extra to transfer the enchant from the book to the tool on the anvil, but what you get for the loss of efficiency is precision in having exactly the enchants you want.

Note that you can also combine enchanted books of the exact same level on the anvil to get one book that has that enchantment level +1. So, you can take two Efficienty III books, combine them, and get one Efficiency IV book as the result. In this way you can slowly gather together the pieces for your ideal set of magic tools and, with enough XP lying around to go through this XP-inefficient process, get a set of tools to your precise specs.

Normal blocks (such as stone, dirt, etc.) do not contain tile-entity data. Blocks with tile-entity data (such as chests, banners, signs, and other blocks with inventories) can store their names in their entity data, but normal blocks do not have this extra data and as such have no name to render, have no entity to render a name, and have nothing to retrieve a name from when broken and dropped as an item.

So to clarify - you can name any item in your inventory, but any normal block that is then placed after being re-named will lose that data, and revert back to it's original item name, unless it is placed in an item frame.