The word "Yoga" has been formed by the root "Yuj" in Sanskrit "Yuj" means "to join" or bind or "to attach"
Union means binding between "Jeeva" and "Atma" or the union of individual self with the SELF or the union of Atma (soul) with almighty Parmatma (God).
The word YOGA has been used in various meaning in Indian traditions such as :

1. Compounds of drugs in medicines
2. Patanjali defines yoga as

Means complete control over the different patterns or modifications of consciousness.
According to the classical Yoga text, the Bhagvada Gita :

Means Yoga is equanimity in success and failure.

Yoga means skill, efficiency in action or job.

Yoga means the severance from the union with pain.

1. Swami Shivananda Said that - "Yoga is integration and harmony between thoughts, words and deeds.
2. Yoga can be defined as a science for developing creativity, as the science for unfolding the deeper aspects of the personality as the science of being; as the science of consciousness.

Various step of the Yoga…

• Suryanamaskara
• Asana
• Pranayama
• Kriya