broad bean vs genus Vicia

broad bean and genus Vicia both are nouns.

Word	Noun	Adjective	Verb	Adverb
broad bean	Yes	No	No	No
genus Vicia	Yes	No	No	No

broad bean (noun)	genus Vicia (noun)
shell beans cooked as lima beans	widely distributed genus of annual or perennial and often climbing herbs
a bean plant cultivated for use animal fodder
Old World upright plant grown especially for its large flat edible seeds but also as fodder
seed of the broad-bean plant