Foreground
Objects in the front of a composition that usually contains the subject matter
Middleground
Subject matter located in or near the middle of the composition
Background
The space in the back of the image (sometimes referred to as negative space)
Negative space
Unused space; area that surrounds or encloses the subject
Positive space
The subject matter itself
Thumbnail sketch
Small, quick sketches that capture possible compositions
Composition
The intentional arrangement of objects to create a focal area, visual movement and unity