Yetzirah

Yetzirah יצירה – The third of four worlds in the Kabbalah. It is the world of formation and of the Angels.

Yetzirah [יצירה], the world of Formation. Example: the child is formed in the womb for nine months. Cosmic Evolution in the Bible

“And IHVH Elohim יצר formed man…” – Genesis 2:7

Yoga

(Sanskrit योग) “union.” Similar to the Latin “religare,” the root of the word “religion.” In Tibetan, it is “rnal-‘byor” which means “union with the fundamental nature of reality.”

“The word YOGA comes from the root Yuj which means to join, and in its spiritual sense, it is that process by which the human spirit is brought into near and conscious communion with, or is merged in, the Divine Spirit, according as the nature of the human spirit is held to be separate from (Dvaita, Visishtadvaita) or one with (Advaita) the Divine Spirit.” – Swami Sivananda, Kundalini Yoga

Yogacharya

(or Yogacarya) A school of Buddhism founded in India by Asanga (300 AD). “The Yogacharyas from the Mahayana school state that Alaya is the personification of the Illuminating Void.” – Samael Aun Weor, Cosmic Teachings of a Lama