The term "Punic apple" has been used to refer to citrus fruits since the ancient times. However, there are various other synonyms for this term that are widely used today. These include Citron, Cedrat, Citrus medica, and Etrog. Citron is a word that is commonly used in English to refer to the fruit, and it is derived from the Greek word for the fruit, 'kitron.' Cedrat is the French term for the fruit, while Citrus medica is the botanical name used to identify the fruit. Etrog is the Hebrew name for the fruit, and it is commonly used during the Jewish holiday of Sukkot. These synonyms are used to identify the fruit in different regions and cultures, but they all refer to the same type of citrus fruit, the Punic apple.