Papilionoideae vs genus Virgilia

Papilionoideae and genus Virgilia both are nouns.

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

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