This document discusses key terminology related to type, including readability, legibility, leading, kerning, tracking, justified text, and white space. Readability refers to how type is arranged based on factors like point size, leading, and line length, which should ensure text is easy to read. Legibility refers to typeface design elements like counters, x-height, ascenders, descenders, and strokes that help distinguish letters. Leading refers to the spacing between lines of type, while kerning is the spacing between two characters and tracking is the spacing between all characters in a line. Justified text aligns both sides of paragraphs, but too much word spacing can cause rivers. White space leaves room on the page