Popular type is a term used to refer to two of the most commonly used fonts in the world. ARIAL is a sans-serif font developed in 1982 by a team of designers at Monotype Typography. It is widely used for both digital and print media, and is a popular choice for web design. ROMAN is a serif font developed in the 15th century, and is one of the oldest typefaces still in use today. It is often used for books, newspapers, and other printed materials.