subfamily Papilionoideae vs Piscidia

subfamily Papilionoideae and Piscidia both are nouns.

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

subfamily Papilionoideae (noun)	Piscidia (noun)
alternative name used in some classification systems for the family Papilionaceae	genus of shrubs or small trees having indehiscent pods with black seeds; roots and bark yield fish poisons