Lolium temulentum and Rye grass

Lolium temulentum noun - Weedy annual grass often occurs in grainfields and other cultivated land; seeds sometimes considered poisonous.

Rye grass and Lolium temulentum are semantically related. In some cases you can use "Rye grass" instead a noun phrase "Lolium temulentum".

Rye grass noun - Any of several annual or perennial Eurasian grasses.

Lolium temulentum and rye grass are semantically related. Sometimes you can replace phrase "Lolium temulentum" with "Rye grass", this phrases are similar.