n.1.  The act or process of confessing, as in telling one's life story as a series of failings or tribulations.
2.  Something confessed, especially a disclosure of one's sins to a priest for absolution.
3.   Confession In some Christian churches, the sacrament of Penance.
4.  A statement made acknowledging guilt of an offense.
5.  An avowal of belief in the doctrines of a particular faith; a creed.
6.  A church or group of worshipers adhering to a specific creed.