[Trypz*]

I would define the mind as a matterless entity born from the mechanics of the brain. Your brain sends nerve signals and controls the rest of the body, but the mind is the later born self-thinking that comes from culminated perception.
Just as a CD player is a bland earthly mechanism, and it produces music
The relationship between brain and mind exists much the same way

The mind begins when experience from perception begins to take shape. From when you are born you begin to see, feel, taste, and hear. What is learned from this is the beginning of the mind.

The mind developes as more is percieved. What used to be unfamiliar and strange sounds take shape and the mind begins to recognize familiar objects. This stage is where an infant might start learning to talk and walk through seeing others doing those things.

Ideas are the mind searching for a solution of sorts. It draws on all experiences that have happened thus far and creates something new.

Creativity is a word expressing the diverse ideas that multiple minds can create. Everyone percieves different things in and from the beginning, therefore it is only logical that their ideas form differently and are therefore inherently unsimilar.