genus Chordospartium vs subfamily Papilionoideae

genus Chordospartium and subfamily Papilionoideae both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Chordospartium	Yes	No	No	No
subfamily Papilionoideae	Yes	No	No	No

genus Chordospartium (noun)	subfamily Papilionoideae (noun)
2 species of small New Zealand trees: weeping tree broom; endangered	alternative name used in some classification systems for the family Papilionaceae