Graminaceae vs family Graminaceae

Graminaceae and family Graminaceae both are nouns.

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

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

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

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

Graminaceae (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