lens – n. a clear curved piece of glass or plastic that is used in eyeglasses, cameras, telescopes, and the like to make things look clearer, smaller, or bigger

emperor – n. a man who rules a group of countries that are controlled by one ruler or one government

empress – n. a woman who rules an empire

crown princess – n. a princess who is expected to become queen when the current king or queen dies

royal – n. of or relating to a king or queen

tire – n. the rubber covering of a wheel

imperial – n. of or relating to a kingdom or an emperor