Body

Body (体) or Corpus refers to 3 out of 4 fundamental existential components of most lifeforms. The Soul, the remaining component, is surrounded by the three bodies, from innermost to outermost: Astral Body, Spiritual Body, and Material Body.

Astral Body
Astral Body (星幽体) is the innermost Body and surrounds the Soul. Is basically the "Vessel" of the Soul.

Spiritual Body
Spiritual Body (精神体) is the body-type responsible for the memories of an individual that prevents those with just Soul and Astral Body from collapsing. It serves as a virtual memory. In the Spirit Plane up until this is enough to interact with the world properly, however, to remain within the physical world, a further body is required.

Material Body
Material Body (物質体) refers to the physical body as most know it. However, there are exceptions to it.