CGST or Central Goods and Services Tax is a mandatory tax levied on the supply of goods and services within a state in India. Some synonyms for CGST include central GST, state GST, union territory GST, and integrated GST. The central GST component is collected by the central government, while the state GST component is collected by the state government. The union territory GST is applicable to union territories, while the integrated GST is applicable to the supply of goods and services across different states. Understanding these synonyms is crucial for businesses to comply with the taxation laws and regulations in India.