I think Wicca is more the mental and spiritual side and follows a path of purpose vs witchcraft which is done with purpose or intent. Wicca to me is working on ourselves mind, body, and spirit focusing internally and then pushing that out into the universe in a positive way to make the world a better place. Maybe the best way for me to describe it is that when I make a charm it is usually to protect (or prevent) something from happening. And Witchcraft is used to cause (or make) something happen. If you want something (a new job, love, money) I think we look to witchcraft to create that possibility and from what I read it seems witchcraft can go much darker in that there are spells that can be used to harm others vs help others. Not to say that Wicca limits the ability to do those things, but with Wicca there is an understanding that everything you put out there should be done with a positive intent and there are consequences if that line is crossed.