Melee is for combat using a melee weapon aka anything that isn't your bare fists.
I do not recommend using this as your combat method as a Malkavian as Brawl is best used for fighting only if you have the Potence or Protean Disciplines, which Malks do not have. Originally posted by TouchOfOblivion:Brawl is for two things: feeding during combat(some enemies cannot be grabbed if your Brawl isn't high enough) and for unarmed combat.