Gramineae vs family Gramineae

Gramineae and family Gramineae both are nouns.

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

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

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

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

Gramineae (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