Grain is an English word, noun and verb, which means "grain" when used as a noun; Particles; [crop] grain; Texture ",when used as a transitive verb, means" to make grain "and when used as an intransitive verb, it means" to make grain ".
Example:
1、The company monopolized the supply of grain.
That company monopolized the supply of food.
2、With you is your fox, your chicken, and a sack of grain.
With you is a fox, a chicken and a bag of food.
3、We took the grain and gave it all out to the farmers.
We brought these grains and distributed them all to the farmers.