Proportion – Proportion refers to the relative size of parts of a whole (elements within an object). https://www.sophia.org
Relation of objects in an image with respect to individual size.
Rule of Thirds – A guideline which applies to the process of composing visual images such as designs, films, paintings, and photographs. https://en.wikipedia.org
A rule that helps with the placement of objects in an image to create more visually interesting compositions.
Golden Rule – The Golden Ratio is a term used to describe how elements within a piece of art can be placed in the most aesthetically pleasing way.