subfamily Papilionoideae vs pea family

subfamily Papilionoideae and pea family both are nouns.

Word	Noun	Adjective	Verb	Adverb
subfamily Papilionoideae	Yes	No	No	No
pea family	Yes	No	No	No

subfamily Papilionoideae (noun)	pea family (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