Dominance (also called D/s) is a set of behaviours, customs, and rituals involving the submission of one person to another in an erotic episode or lifestyle.
Physical contact is not a necessity. In other cases, it can be intensely physical, sometimes crossing into sadomasochism. In D/s, both parties take pleasure or erotic enjoyment from either dominating or being dominated. Those who take the superior position are called dominants – Dommes (female)—while those who take the subordinate position are called submissives—or subs (male or female). A switch is an individual who plays either role. Two switches together may negotiate and exchange roles several times in a session. “Dominatrix” is a term usually reserved for a female professional dominant who dominates others.