In Hindi spirituality is known as adhyatma which means inside the soul. When you look inward relinquishing your craving for outward attractions, when you guide your consciousness to move inward and fossick through the halts, treasures and the hidden powers of your inner self, you are in the realm of spirituality. Yoga means  the communion of individual self with the God. It has got eight different stages under three different heads:

a) Bahirang Yoga - It is related with the outer body  postures and it is the thing what we commonly presume as Yoga. But it is just the minuscule part of what actually Yoga is. Since we are standing at the level of body consciousness, we start with the body. And to start with we give our body strength by using different postures and by observing some outer principles  like Yam, Niyam, Aasan, pranayam, Pratyahar etc.  

b) Antarang Yoga - The internal journey or involution starts here. The stages are Dharna and Dhvan. We can commonly call it meditation. Now the general ask is what the meditation is. In common man's parlance meditation is a process of taking you away from the intricate domain of mind.

c) BRAHMA YOGA- This is the third and the final halt of Yoga- the eighth stage  which is otherwise known as Samadhi. It is also of two types. One is Savikalpa (Discriminate) Samadhi and the other, the highest one is Nirvikalpa (Indiscriminate) Samadhi. In this highest stage even the trinity of meditator, meditated and the meditation vanishes past and there remains only Absolute Realty  (Sat), Absolute Consciousness (Chit), and Absolute Bliss (Ananda) (Sachidananda ).