family Graminaceae vs genus Setaria

family Graminaceae and genus Setaria both are nouns.

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

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