Vigna vs subfamily Papilionoideae

Vigna and subfamily Papilionoideae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vigna	Yes	No	No	No
subfamily Papilionoideae	Yes	No	No	No

Vigna (noun)	subfamily Papilionoideae (noun)
genus of vines or erect herbs having trifoliate leaves and yellowish or purplish flowers; of warm or tropical regions; most species often placed in genus Phaseolus	alternative name used in some classification systems for the family Papilionaceae