Difference between Self-possession and Possession

Self-possession

Part of speech: noun

Definition: confidence in one's own powers calmness and composure, especially when under stress

Possession

Part of speech: noun

Definition: Ownership.Something that is owned.A territory under the rule of another country.The condition or affliction of being possessed by a demon or other supernatural entity.Control of the ball; the opportunity to be on the offensive.

Example sentence: Every increased possession loads us with a new weariness.