A tiara is a type of HEADDRESS that is typically worn by royalty and other high-ranking individuals. It is usually made of precious metals and jewels and is often adorned with intricate designs. The term tiara can refer to three different types of headdresses: a CROWN, a CORONET, and a DIADEM. A CROWN is a circular HEADDRESS with a brim and a peak at the top. A CORONET is similar to a CROWN but has a more ornate design and is usually smaller in size. A DIADEM is a band of metal or cloth that is worn around the head. All three of these headdresses are considered tiaras and are often used to signify power and status.