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)
Old World upright plant grown especially for its large flat edible seeds but also as fodder	widely distributed genus of annual or perennial and often climbing herbs