Parinirvana is the highest level of nirvana, «nirvana without remainder», and the independent existence of the True Ego; «pari» translates as «finally». Parinirvana does not relate to any of the worlds; therefore, it is impossible to be in a state of parinirvana and live at the same time. If an arhat immediately after reaching nirvana discards life, then he will fall into parinirvana. «Parinirvana» and «nirvana with a remainder» are antonyms.

World of bodhinirvana. The arhat, after reaching nirvana, does not stop at this, but expands his achievement, leading other personalities to achieve nirvana, and thus overcoming the bonds of other worlds, other delusions that he did not have before. Such a person is called a «bodhisattva». «Bodhi» is translated as «awakening, enlightenment», and «sattva» is translated as «being», a being striving for awakening. The Bodhisattva makes a shuttle movement: nirvana – samsara – again nirvana – again samsara – nirvana – and so on. Repeating the path of liberation doubles the experience of that person. Then triples. Then quadruples. And so on. In this way the individual has a wider and wider experience of liberation than just one-man nirvana. This state of expanding the experience of nirvana is called «bodhinirvana». In the world of bodhinirvana, in relation to the world of nirvana, one can single out the upper level: bodhiparinirvana, where a bodhisattva can go after death; and bottom. The lower bodhinirvana can also be conditionally divided into three levels, depending on which world experience is being destroyed: causal bodhinirvana, astral bodhinirvana, and bodhinirvana of the phenomenal world.

World of mahanirvana. When a bodhisattva gains the experience of liberation in general from all delusions, which can be in the world of phenomena, and in the astral, and in the causal, he finds himself in a state that he has nothing more to achieve, he has overcome all the experience that is possible. This state is called «buddha» and this state corresponds to mahanirvana. «Maha» is translated as «great». Since mahanirvana corresponds to liberation from all worlds in general, it is divided into only two levels: mahanirvana and mahaparinirvana. Mahaparinirvana stands for the great final destruction of worldly desires. Buddha Shakyamuni left for mahaparinirvana after his death. There is often a discussion in the sources on the question: "can a Buddha-personality return from mahaparinirvana as the same person?" – Yes. Because the buddha personality is free, it is free to choose whether to return from mahaparinirvana or never to return.

Physical body is an ordinary human body. The physical body has a consciousness.

Astral body can be described as something similar to the reflection of the body in a mirror. That is, it is not a body, but just a reflection. That is, it is, and at the same time it is not. To see the astral body, you need to have astral vision. The physical body is so arranged that when a person uses physical eyes, he himself, by virtue of a certain mechanism of communication between the astral body and the physical body, suppresses astral vision in himself. However, the ability to see with astral vision is not something unattainable. This ability develops in meditation. The astral body has its own consciousness. This consciousness of the astral body is correlated with what in science is called the subconscious (unconscious). The astral body, separated from the physical body, is also called the ghost body. There are beings who have only an astral body, but no physical body. Such creatures are simply called ghosts. When it is said about a person that a demon has moved into him, it means that a being of the lower astral (ghost), who does not have his own physical body, has superimposed on the astral body of a person or has taken (replaced) the place of his astral body.