family Gramineae vs Poaceae

family Gramineae and Poaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Gramineae	Yes	No	No	No
Poaceae	Yes	No	No	No

As nouns, family Gramineae and Poaceae are synonyms defined as:

family Gramineae and Poaceae: the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane

Other synonyms of family Gramineae include family Graminaceae, family Poaceae, Graminaceae, Gramineae, grass family.

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