Diameter
Part of speech: noun
Definition: Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle. The length of such a line. For a set in a metric space is the maximum distance between two points The maximum eccentricity over all vertices in a graph.
Width
Part of speech: noun
Definition: The state of being wide.The measurement of the extent of something from side to side.A piece of material measured along its smaller dimension, especially fabric.The horizontal distance between a batsman and the ball as it passes him.