Herb with Genovese and Thai varieties is BASIL (5 letters). BASIL is an aromatic herb that is widely used in cooking. It is native to tropical regions of Asia and Africa, but is now cultivated around the world. There are two main varieties of BASIL: Genovese and Thai. Genovese BASIL is a sweet variety that is commonly used in Italian cuisine, while Thai BASIL has a more pungent flavor and is used in Southeast Asian dishes.