genus Laburnum vs Papilionoideae

genus Laburnum and Papilionoideae both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Laburnum	Yes	No	No	No
Papilionoideae	Yes	No	No	No

genus Laburnum (noun)	Papilionoideae (noun)
flowering shrubs or trees having bright yellow flowers; all parts of the plant are poisonous	alternative name used in some classification systems for the family Papilionaceae