Graminales vs Poaceae

Graminales and Poaceae both are nouns.

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

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