Hay.
Grass seed is the reproductive method of most grasses, so grass produces seeds which when sown produce new plants.
The grass means the grass the person is reffering to grass could be any grass in the world.
Yes.
In the sense that it looks like grass, is plant, has roots, has long elongated leafs with little to no stems growing out of the ground and can cover large area while being so close to each other to...
Learn About Ornamental Grasses
How to Divide Ornamental Grass Plants
The Unique Ornamental Grasses
How to Plant Grass Seeds