Tessera is a term derived from the Greek language meaning 'four'. It is commonly used to refer to a small TILE or cube used in various board games, such as dominoes and mahjong. Tesserae are also used in mosaics, where they are arranged in patterns to create a larger image. In architecture, tesserae are often used to create intricate patterns in walls and floors. Tesserae can also be used to create jewelry, such as necklaces and earrings.