"Dominance and submission" (also known as D&s, Ds or D/s) is a set of behaviors, customs and rituals relating to the giving and accepting of control of one individual over another in an erotic or lifestyle context.
Compensating elements of the total dominance and submission are care and devotion complementing one another, therefore facilitating stable relationships. The consensual submission of the sub is sometimes demonstrated to others by symbols indicating his/her belonging to the Dom, such as wearing a collar and in some cases tattoos and/or piercings.
In general as compared to conventional relationships, BDSM participants go to great lengths to negotiate the important aspects of their relationships in advance, and to take great care in learning about and following safe practices.