Bambuseae vs Poaceae

Bambuseae and Poaceae both are nouns.

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

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