grass family vs family Graminaceae

grass family and family Graminaceae both are nouns.

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

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

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

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

grass family (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