The soul is the spiritual part of a person that is believed to give them life and personality. It is often thought of as the inner essence of a person that is separate from the physical body. [Spiritual: relating to the spirit, the inner energy or essence that gives a living being its personality, emotions, and vitality.]
Example: Many people believe that when someone dies, their soul goes to either heaven or hell.
Very Simple Definition:
The soul is what makes a person who they are inside. It’s like their personality that’s not seen, but can be felt.
Example: When someone feels happy or sad, that’s their soul showing how they feel.