Genus Cajanus, commonly known as pigeon pea, is a legume plant found in tropical and subtropical regions. The plant is appreciated for its nutritious seeds and its ability to enrich the soil. In different regions around the world, Cajanus is known by various synonyms. In Africa, it's referred to as fio-fio, while in India, it's called arhar or toor. In some parts of South America, it's known as guandú, while in the Caribbean, it's called gungo pea. Another synonym for Cajanus is the Congo pea, and in some places, it's simply called the tropical green pea. Regardless of its name, the plant is respected and consumed worldwide due to its many benefits.