Pigeon pea (Cajanus cajan), also known as red gram, Congo pea, gungo pea, no-eye pea, and yellow dhal, is a perennial legume that is cultivated in tropical and subtropical regions of the world. Pigeon pea is a staple food crop in many countries, and its seeds are used for a variety of culinary purposes, such as in soups, stews, and curries. The plant is also highly valued for its nitrogen-fixing properties, which make it an important crop for soil fertility and sustainability. In addition to the aforementioned synonyms, other common names for pigeon pea include toor dal, arhar dal, kandi, and tur.