"Great Seal" refers to an emblem or insignia that represents a country, state, or organization. Synonyms for "Great Seal" include "official seal," "coat of arms," "emblem," "logo," "insignia," and "crest," among others. Some countries or states may have specific names for their official seal, such as the United States Great Seal or the Seal of the State of California. Regardless of its name, a Great Seal typically represents the authority and sovereignty of a government or institution, and is often used on important documents, such as treaties or official correspondence. The design and symbolism of a Great Seal can vary greatly, and may include features such as animals, plants, and historical figures.