The term 'Key Symbols' can refer to a variety of symbols that are used to represent something important or meaningful. One such symbol is the Ankh, which is an ancient Egyptian hieroglyphic character that symbolizes life and immortality. It is often depicted as a cross with a loop at the top, and is believed to have originated in the pre-dynastic period of Egypt. The Ankh is still used today as a symbol of life and protection, and is often seen in jewelry and other decorative items.