In many religions and parts of philosophy, the soul is the immaterial spirit or essence of a person. It is usually thought to consist of one's thoughts and personality, and can be synonymous with the mind or self. In theology, the soul is often believed to live on after the person’s death, and some religions posit that God creates souls. In some cultures, non-human living things, and sometimes inanimate objects are said to have souls.

The terms soul and spirit are often used interchangeably, although the former may be viewed as a more worldly and less transcendent aspect of a person than the latter. The words soul and psyche can also be treated synonymously, although psyche has relatively more physical connotations, whereas soul is connected more closely to metaphysics and religion.

Source: Wikipedia