Magic

Any undefined science of indefinite time is called magic.

Sometime illusionist performs illusion in front of people, which trick their perception due to limitation of two-dimensional eye view. To district you illusionist used additional tools like music, acting , dancing and immodestly dressed assistant (etc).

Most of such illusionists never claimed that they are magicians but some of them said so.

Here we are not discussing about such illusionist. There are some other categories of magic like black or white magic.

            Black Magic:

Meditation for your selfishness 

Rituals performed for your own selfish desire make you feel more focus about your greed. Magic fantasizes you when you are so frustrated. In actuality it got nothing for you because Magic does not exist at all. Its like another religion to practice and the believer of this religion has faith in it that every single thing s/he got in life is due to the practice of magic rituals.

White Magic

Muslim, Christian and Jew used the verses of their holy books to prevent and cure of black magic. For fight back the black magic they spells verses of holy books or write in patron but it is all in vague to do because they think that some evil spirit take over the soul of some human. Basically that person was suffering from some psychological disorder and needed psychotherapy and medical care.