broad bean vs horsebean

broad bean and horsebean both are nouns.

Word	Noun	Adjective	Verb	Adverb
broad bean	Yes	No	No	No
horsebean	Yes	No	No	No

As nouns, broad bean and horsebean are synonyms defined as:

Other synonyms of broad bean include fava bean.

broad bean (noun)	horsebean (noun)
shell beans cooked as lima beans	large shrub or shrubby tree having sharp spines and pinnate leaves with small deciduous leaflets and sweet-scented racemose yellow-orange flowers; grown as ornamentals or hedging or emergency food for livestock; tropical America but naturalized in southern United States
a bean plant cultivated for use animal fodder	seed of the broad-bean plant
Old World upright plant grown especially for its large flat edible seeds but also as fodder
seed of the broad-bean plant