Assiah: The World of Matter; The World of Action

The Tree of Life is a kabbalistic system in the form of a tree, which is divided into ten parts, (or ten fruits, or ten spheres, or ten sephirah). These fruits have ambiguous sense, and they can be interpreted as both the state of the whole, of the universe, and can be read as states of consciousness.

However a Sephirah can't be understood in a single plane because it has a fourfold nature, that is, it is composed of four planes (four worlds). Are they:

Yetzirah: The World of Formation and the Angels

Briah: The World of Creation, also called Khorsia; The World of Thrones

Atziluth: The World Archetype; The World of Emanations; The Divine World