Oryza vs Poaceae

Oryza and Poaceae both are nouns.

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

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