family Poaceae vs family Gramineae

family Poaceae and family Gramineae both are nouns.

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

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

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

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

family Poaceae (noun)	family Gramineae (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