Synonyms for Broad Bean (same or very similar meaning)
WordNet sense 1 (seed of the broad-bean plant):
horsebean, fava beanWordNet sense 2 (Old World upright plant grown especially for its large flat edible seeds but also as fodder):
broad-bean, broad-bean plant, English bean, European bean, field bean, Vicia fabaWordNet sense 3 (a bean plant cultivated for use animal fodder):
horse beanFrom the ODE community, based on WordNetadd/edit