The term REGAL HEADWEAR refers to three different types of headwear: Tiaras (6 letters), Diadems (6 letters), and Tiaras (5 letters). Tiaras are typically made of precious metals and jewels, and are worn by royalty or those of high social status. Diadems are similar to tiaras, but are usually more ornate and have a more elaborate design. They are also often adorned with jewels and other decorations. Finally, Tiaras (5 letters) are smaller versions of tiaras, and are often worn as part of a formal outfit. All three types of regal headwear are symbols of power and prestige.