In the Catholic tradition, confession to a priest is treated with special protection as a sacred right. The priest is charged with maintaining the confidential nature of the confession.

When is a confession considered sacramental and when is it ordinary? Is there some kind of instantiation procedure to switch to a confession if chatting with a priest? Is it possible to use the language of of confessing a sin in the hearing of a priest and not have it be sacramental? Does place matter?