Papilionoideae vs Cajanus

Papilionoideae and Cajanus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Papilionoideae	Yes	No	No	No
Cajanus	Yes	No	No	No

Papilionoideae (noun)	Cajanus (noun)
alternative name used in some classification systems for the family Papilionaceae	erect densely branched shrubby perennials of Old World tropics; naturalized in other warm regions