A confession to a priest is a practice in many religions, including Christianity, where a person confesses their sins to a priest and seeks absolution. The term 'SHRIFT' is a six-letter word used to describe this practice, and 'SIN' is a three-letter word that refers to the act of wrongdoing or transgression against divine law. Together, these two words can be used to describe the act of confessing one's sins to a priest, which is known as a confession to a priest.