What is the real meaning of soul?

The immaterial essence, animating principle, or actuating cause of an individual life.
The Spiritual Principle embodied in human beings

The journey of soul towards Self-Realization is called Spirituality. The journey is Spirituality and the destination is Self-Realization, which is the ultimate goal of every human being in the world.

The Soul continue its journey through different stages. The stages are;

Varu: The initial stage. There are 12 steps in this stage.
Nana:
Guru
Rishi
Maharshi
Brahmarshi
Demi Gods
Godly Energies