- Punishment – harsh to reinforce rules or break bad behavior.
 - Pleasure - if the Dom is a Sadist or the sub is a masochist.  It can also be a form of humiliation.
 - Sensual - fun teasing type, typically soft to mild pats with tingle and stimulate.
 
  The submissive should know what type is being given, especially if it is a Punishment one.  they should be able to tell a Sensual from a Pleasure if they know the Dom.