family Poaceae vs family Graminaceae

family Poaceae and family Graminaceae both are nouns.

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

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

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

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

family Poaceae (noun)	family Graminaceae (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