family Graminaceae vs family Poaceae

family Graminaceae and family Poaceae both are nouns.

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

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

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

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

family Graminaceae (noun)	family 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