Caesalpinioideae vs subfamily Caesalpinioideae

Caesalpinioideae and subfamily Caesalpinioideae both are nouns.

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

As nouns, Caesalpinioideae and subfamily Caesalpinioideae are synonyms defined as:

Caesalpinioideae and subfamily Caesalpinioideae: alternative name in some classification systems for the family Caesalpiniaceae

Caesalpinioideae (noun)	subfamily Caesalpinioideae (noun)
alternative name in some classification systems for the family Caesalpiniaceae	alternative name in some classification systems for the family Caesalpiniaceae