Punishment, in the D/s sense, refers to anything more than corrections for things the submissive partner has done wrong. Just like with crimes, the punishment is usually selected by the dominant partner to fit the crime, however it is also common to let the submissive partner select his own punishment.
Punishment can come in physical and mental forms and can also include denial of certain pleasures or rights. Many people see physical punishments as less severe. Especially people involved in 24/7 relationships often see mental punishments as the only real form punishment and discount the physical aspects as play.
Physical punishment usually centers around the infliction of pain. While most of the S&M practices on this site can serve as a form of punishment, here are some of the most common forms:
Mental punishments come in as many flavors as physical punishment. Usually forms humiliation or orgasm denial are used although deeply submissive people often say that the dominant partner’s expression of disappointment is the worst punishment for them.