Ricegrass and Silk grass

Ricegrass noun - Any grass of the genus Oryzopsis.

Silk grass and ricegrass are semantically related. In some cases you can replace phrase "Silk grass" with "Ricegrass", this terms are similar.

Silk grass noun - Valuable forage grass of dry upland areas and plains of western North America to northern Mexico.

Ricegrass and silk grass are semantically related. You can use "Ricegrass" instead a noun phrase "Silk grass".