The Magna Carta, also known as the Great Charter, has been referred to by several synonyms over time. One commonly used synonym is "Charter of Liberties," highlighting its role in establishing basic rights and freedoms. It has also been called the "Charter of English Liberties," emphasizing its importance in English political history. Another synonym is "The Great Seal," as it was validated with a seal, which was significant in medieval law. Additionally, it has been referred to as the "Charter of the Forest," as it was supplemented by the Charter of the Forest in 1217, which addressed issues related to common land and the rights of the common folk.