I am watching [***this (game dev, space parenting & rotation)***](https://www.youtube.com/watch?v=Q1xZGt41N80) 
Sebastian Lague video and found that there are **three spaces** actually (not two) and these are world space, local space and object space.

1. World space: The static space (0,0,0)
2. Object space: related to the object space
3. Local Space: related to the parent of the object

I am amazed that i didn't find the distinction between these two spaces(local and object) on official unity forms but actually it exists. My question is that why there is no Space.Local? I found that there are Space. Self and Space.World.
Space.Self is refer to object space. I can move my object to object space using this

```
    void Update () {
        transform.Translate(new Vector3(0,0,1) * Time.deltaTime * 2,Space.Self);
    }

```

And i can move my object to world space using this

```
void Update () {
    transform.Translate(new Vector3(0,0,1) * Time.deltaTime * 2,Space.World);
}

```

but there is no support for local space that i could move the object to local space (means move the object related to its parent object). There is a fair distinction between Local and Object space but unity didn't consider it i guess or i am wrong.