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The ratio of a rectangle's width to its height. It is measured by dividing the shorter side length, here "w" or width, by the longer side length, "h" or height. The aspect ratio may be given as either a fraction or as a decimal.

An iconic design that is made up of two or three letters.

A design language developed by Google. The goal of Material Design was to create fluid, natural movement for users on any platform they happen to be using.

A printing press that uses movable type and punches to make impressions on paper.

PPI stands for Point Per Inch. PPI is the number of dots per inch in a printer's resolution or the number of pixels per inch in a monitor's screen resolution. The more PPI, the higher your image quality will be as it becomes sharper and clearer. The lower your PPI, the lower your image quality will be, and the more likely you'll see individual pixels in an image.

A tool that allows user experience designers, or people who design products and websites with consumers in mind, to track where users look on the screen. Eye-tracking can measure users’ attention and the duration of time they spend on different areas of a website. With this information, websites can create user experience solutions such as buttons with varying colours designed to catch the eye.

A mark or symbol used to represent an institution, organisation, person, or group, and it is usually displayed on flags and seals.

A rule of thumb used in photography to create more visually appealing images which states that an image should be composed so that the subject or focus of the image occupies one-third of the picture space, with two equal vertical lines dividing their composition into two.

A photograph that is purchased and licensed for exclusive use by an individual or business.

A triad is a group of three colours that are equally spaced on the colour wheel.