Unjoining objects in Blender is the process of separating two or more objects that have been joined together. This can be useful for a variety of reasons, such as when you need to edit the objects individually or when you want to change the way they are connected to each other.
To unjoin objects in Blender, simply select the objects that you want to separate and then press the “P” key. This will bring up a menu with a number of options, including “Separate.” Select the “Separate” option and the objects will be separated.