grass family vs Poaceae

grass family and Poaceae both are nouns.

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

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

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

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

grass family (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