Indian millet vs mountain rice

Indian millet and mountain rice both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indian millet	Yes	No	No	No
mountain rice	Yes	No	No	No

As nouns, Indian millet and mountain rice are synonyms defined as:

Indian millet and mountain rice: valuable forage grass of dry upland areas and plains of western North America to northern Mexico

Other synonyms of Indian millet include Oryzopsis hymenoides, silk grass, silkgrass.

Indian millet (noun)	mountain rice (noun)
sorghums of dry regions of Asia and North Africa	valuable forage grass of dry upland areas and plains of western North America to northern Mexico
valuable forage grass of dry upland areas and plains of western North America to northern Mexico