Definition: A landform that extends above the surrounding terrain in a limited area. A mountain is generally steeper than a hill, but there is no universally accepted standard definition for the height of a mountain or a hill although a mountain usually has an identifiable summit and a local relief of more than 300m.
Definition: a small cluster of elongated flexible outgrowths attached or close together at the base and free at the opposite ends especially; a growing bunch of grasses or close-set plants"