Wheat barnyard grass and wheat barnyard grass are very similar, and we can't distinguish them for sure until the ear and heading bear fruit. The semantic meaning of barnyard grass is weed, which refers to a kind of poisonous straw, which looks like wheat, but its ears are gray-black.
If its seeds are ground with wheat, the flour will contain toxic substances, so it is generally called "poisonous wheat". "Poisonous barley itself is non-toxic, but a fungus is parasitic on the flower spike, producing poisonous barley alkali.
Wheat and barnyard grass in the Bible use figurative rhetoric.
This metaphor is about wheat and barnyard grass. Wheat and barnyard grass are destined to be separated.
Good and evil will be separated. Wheat and barnyard grass will have different fates and endings. Good and evil will have different fates and endings. The important thing is that you are really wheat.