The Vietnamese word "húng" refers to a type of herb, specifically basil. In Vietnamese cuisine, different types of basil are commonly used, and "húng" can refer to various kinds, such as sweet basil ("húng dổi") and Thai basil ("húng quế").
In summary, "húng" is a versatile term in Vietnamese that mainly refers to basil. It can denote different varieties of basil, each with unique flavors and culinary uses.