genus Virgilia vs Papilionoideae

genus Virgilia and Papilionoideae both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Virgilia	Yes	No	No	No
Papilionoideae	Yes	No	No	No

genus Virgilia (noun)	Papilionoideae (noun)
genus of South African trees having pinnate leaves and rose-purple flowers followed by leathery pods	alternative name used in some classification systems for the family Papilionaceae