Kabbalah distinguishes levels of the soul, each linked to a world: nefesh, the vital soul; ruach, the spirit, seat of emotions and morality; neshamah, the higher soul, which knows God. Later kabbalists added chayah and yechidah, the living and the unique, reaching to the divine.
Nefesh, ruach, neshamah
The levels of the soul in Kabbalah: the vital soul, the spirit and the higher soul.
Also: levels of the soul