What is the meaning of confession?

noun

• An admission of misdeeds or faults.
• A written document acknowledging an offense and signed by the guilty party.
• Roman Catholic Church. ( the act of a penitent disclosing his sinfulness before a priest in the sacrament of penance in the hope of absolution)
• A public declaration of your faith.
• The document that spells out the belief system of a given church (especially the Reformation churches of the 16th century. ).