Definitions:


Line: a line is a basic element in photography, which can be used both for artistic and organizing functions. Used to create borders or dividers in a frame, which can help to enhance the quality of the image.
Shape: a shape is another basic element in a photo that is a two-dimensional image. With proper lighting and structure, a shape can become a form (a three-dimensional) and create a better view.
Color: In an image, colors are the natural rays of light that are viewed in the frame. With lighting adjustments and editing, an image can have natural color, neutral colors, or even unnatural fluorescent colors.
Value: Value is the level of brightness of pixels or colors in a frame
Volume/form balance: it is the way elements, whether they be colors, shapes, or lines, in a picture that create a well working image with evenness (harmony).
Harmony: Harmony is the overall balance of the image, that creates a sort of unity between the objects in a picture.
Contrast: Contrast is the range in brightness in an image. The higher the contrast, the brighter it becomes.
Movement: Movement is the way the viewers eyes move in a photo. It can be along lines or even through colors.
Rythm: a consistent movement through out a photo. As if it were a beat, these movements create a continuous flow in a photo.
Texture:the tactile quality of a form.
Balance:juxtaposing an  image within a frame sot that the objects are of equal visual weight