Bambuseae vs Graminaceae

Bambuseae and Graminaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bambuseae	Yes	No	No	No
Graminaceae	Yes	No	No	No

Bambuseae (noun)	Graminaceae (noun)
bamboos	the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane