The term CALABAR BEAN refers to a type of bean native to West Africa. It is also known as the African locust bean, and its scientific name is Parkia biglobosa. The FAVA solution is a four-letter word for a type of bean that is related to the Calabar bean, while ROY and SOY are three-letter words for other types of beans. Fava beans are also known as broad beans, and they are a popular ingredient in Mediterranean cuisine. Roy and SOY beans are both legumes, and they are widely used in Asian cuisine.