What is difference between mass and weight?

Mass is the amount of stuff in something. Weight is a measure of the amount of gravity acting on the stuff. If you were travel from earth to the moon, you would have the same mass but different weight. Why? Because the amount of stuff in you is always the same. The moon however has less gravitational force than the earth so you would weigh less. In fact, you’d only weigh 16 percent of what you weigh in earth.