In Unity, the Hierarchy area is usually located on the left side of the Unity Editor.
The Hierarchy displays all of the GameObjects in the current Scene.
For example, you might see:
Main Camera
Ground
Player
Coin
Enemy
Directional Light
Click any GameObject in the Hierarchy to select it.
When an object is selected, its properties and components usually appear in the Inspector window.
For example, if you click:
The Player's Transform, Collider, Rigidbody, scripts, and other components can appear in the Inspector.
If the Hierarchy is missing, open it from the Unity menu.
Select:
The Hierarchy window should then appear in the Unity Editor.
You can use the Hierarchy to:
Your Hierarchy might look like this:
Main Camera
Ground
Player
Coin
Each item represents a GameObject in your Scene.
A common Unity workflow is: