subfamily Papilionoideae vs Pterocarpus

subfamily Papilionoideae and Pterocarpus both are nouns.

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

subfamily Papilionoideae (noun)	Pterocarpus (noun)
alternative name used in some classification systems for the family Papilionaceae	genus of tropical trees or climbers having usually broadly winged pods