fava bean vs horsebean

fava bean and horsebean both are nouns.

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

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

Other synonyms of fava bean include broad bean.

fava 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
seed of the broad-bean plant	seed of the broad-bean plant