The difference between density and weight lies in their definitions and the factors they depend on. Here's a summary of their differences: Density is a measure of the amount of mass in a unit volume of a substance. It does not depend on gravitational force and remains constant regardless of the gravitational field. Density is usually measured in kilograms per cubic meter.
Weight is the force generated by gravitational attraction on an object. It is directly related to the mass of the object and the gravitational force exerted on it. Weight is measured in Newton's and depends on the gravitational field. In other words, density is an intrinsic property of a substance, while weight is an extrinsic property that depends on the gravitational force. For example, the density of water is 1 g/cm³, regardless of where it is measured. However, the weight of a 1-liter container filled with water would vary depending on the gravitational force at the location, such as on Earth or the Moon.