A letter, symbol, or another alphabet unit.
Typically used on the internet or web pages to provide easily accessible navigation for users. Typically, the breadcrumb navigation appears along the top of a webpage or at other locations on a webpage so that users can know where they are on a site quickly and efficiently.
The feeling or mood created by a design.
A logo, symbol, design, or pattern used to promote and distinguish one's brand or company from others.
A statistical method in which two variants of the same activity are compared against each other (typically with several variants), one at a time, and the most effective variant is selected.
The word "bracket" is often used to refer to parentheses and is written as either  or () and used to delimit blocks of text, e.g. a set of instructions. Within brackets, items are arranged from left to right in order of precedence.
The height of a font, measured in points or pixels.
A prediction model used in human-computer interaction. It states that the time required to move to a target area rapidly increases as the distance to the target increases. The law was proposed by Paul Fitts, an American psychologist, in 1954 as a mathematical model of movement with limited cognitive capacity.
Fitts hypothesized that one would quickly select its first apparent target when reaching for an object before considering alternatives — a phenomenon called "target fixation." This tendency would increase progressively with increased distance between the subject and object until it eventually became exponential (i.e., too far away).
The process of a new user being brought in to a new product. The design for this process aims to have an effective, efficient, and engaging user experience.
Also known as a suspension point, is a series of dots (…) that is used either as a substitute for some text that has been omitted from a sentence or when the author does not wish to pause in their writing.
A way of expressing colours on digital media. To specify a hex code, you need to consider the three primary colours: red, green and blue. The hex code is always six characters long and looks like this: #RRGGBB and their values range from 00 to FF.