subfamily Papilionoideae vs Fabaceae

subfamily Papilionoideae and Fabaceae both are nouns.

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

subfamily Papilionoideae (noun)	Fabaceae (noun)
alternative name used in some classification systems for the family Papilionaceae	a large family of trees, shrubs, vines, and herbs bearing bean pods; divided for convenience into the subfamilies Caesalpiniaceae, Mimosaceae, Papilionaceae