Rag papers are high-quality and durable papers made from cotton rags. The term "rag papers" has a range of synonyms that can be used to refer to this high-quality type of paper. Some alternative words for rag papers include cotton paper, archival paper, museum-quality paper, and acid-free paper. All these terms are used interchangeably to describe this type of paper. Rag papers were initially used for printing money and later became popular in the printing industry because of their strength and color retention properties. These papers are now commonly used for fine art printing, bookbinding, calligraphy, and other high-end printing applications due to their longevity and superior quality.