family Gramineae vs Setaria

family Gramineae and Setaria both are nouns.

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

family Gramineae (noun)	Setaria (noun)
the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane	annual or perennial grasses of warm regions: bristlegrasses