Use this tags for questions about operations performed on objects when they are in object-mode, rather than any of the other modes, such as edit, sculpt and weight painting.

Blender has different tools available for manipulating objects in the 3D Viewport editor, depending on what mode the object is in. One of these is Object mode. The manual describes object mode as

The default mode, available for all object types, as it is dedicated to Object data-block editing (e.g. position, rotation, size).

This tag should be used for questions that are specifically about the operations that can be performed on an object when it is in object mode.