grass family vs millet

grass family and millet both are nouns.

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

grass family (noun)	millet (noun)
the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane	small seed of any of various annual cereal grasses especially Setaria italica
	any of various small-grained annual cereal and forage grasses of the genera Panicum, Echinochloa, Setaria, Sorghum, and Eleusine