Relationship: Mass and weight are directly related; weight is the force exerted by gravity on an object's mass.
Difference: Mass is a measure of the amount of matter in an object, typically measured in kilograms. Weight, on the other hand, is the force acting on that mass due to gravity, measured in newtons (or pounds). Mass is constant regardless of location, while weight can change depending on the gravitational field (e.g., Earth vs. the Moon).
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