There are several synonyms for the term "two piece suits," including lounge suits, business suits, or simply a suit. A lounge suit is a traditional suit worn for casual or informal occasions, while a business suit typically refers to a more formal suit worn for professional settings. In addition to the traditional two piece suit, there are also three piece suits, which include a vest or waistcoat. Other synonyms for two piece suits may include tailored suits, fitted suits, or formal attire. Overall, the term "two piece suit" is a versatile description that can refer to a variety of styles and occasions.