The term picture generally refers to the process of creating visual images through the registration and recording of light, using appropriate devices (cameras). Etymologically, the word picture is complex and comes from the Greek words-and-light style.
To paint one uses in creating shapes and colors, such as brush, a pen, pencil, etc. on materials that wants to contain the final result, such as paper, cloth, etc. for painting by physical means or the computer and peripherals (such as the mouse and drawing tablet (drawing pad)) for e painting.