Is leek wheat straw?

Leek, a perennial herb of Liliaceae, has fleshy roots.

Wheat grass is a perennial plant with fibrous root system.

To sum up, they are not a plant, a family, or a genus. Their leaves are somewhat similar, but the thick leaves of leeks are long and wide and can be eaten as vegetables. Wheat grass leaves are thin and long. Mainly do lawn greening ground. This is a kind of weed.