What is the difference between consciousness and unconscious?

The conscious mind is the part of your mind which you are aware of and have the capacity to control. The unconscious mind is the part of your mind you are unaware of, like your dreams, repressed and forgotten memories, which are inaccessible and uncontrollable. It is believed that your unconscious mind becomes dominant when you are asleep (or unconscious) and your conscious mind is dominant when you are awake (conscious).

For more information on the conscious and the unconscious mind, refer to the works of Sigmund Freud who theorised many of the processes on the mind. Although they may or may not be true, his theories and research are considered to be the most accepted ideas of the mind in modern society.