Oryzopsis hymenoides vs silkgrass

Oryzopsis hymenoides and silkgrass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oryzopsis hymenoides	Yes	No	No	No
silkgrass	Yes	No	No	No

As nouns, Oryzopsis hymenoides and silkgrass are synonyms defined as:

Oryzopsis hymenoides and silkgrass: valuable forage grass of dry upland areas and plains of western North America to northern Mexico

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

Oryzopsis hymenoides (noun)	silkgrass (noun)
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