Typography is the art of arranging type. This document discusses key typography terms like typefaces, fonts, x-height, ascender, descender, serifs, sans serif, slab serif, script, decorative, distressed, and old style, modern, and decorative typeface categories. It also covers combining typefaces through contrast by using different colors, directions, forms, sizes, structures, or weights between typefaces. The goal is to achieve clear distinction or emphasis when contrasting typefaces.