horsebean vs fava bean

horsebean and fava bean both are nouns.

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

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

Other synonyms of horsebean include broad bean.

horsebean (noun)	fava bean (noun)
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	shell beans cooked as lima beans
seed of the broad-bean plant	seed of the broad-bean plant