subfamily Caesalpinioideae vs family Leguminosae

subfamily Caesalpinioideae and family Leguminosae both are nouns.

Word	Noun	Adjective	Verb	Adverb
subfamily Caesalpinioideae	Yes	No	No	No
family Leguminosae	Yes	No	No	No

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