There are many correct answers to this question, as there are many differences between mass and weight. Many people have the tendency to use these words interchangeably, but they mean different things. At rest on Earth, the mass and weight are the same. However, at a different location, the weight would change, but the mass would not. If the gravity gets higher, the weight will increase. If gravity lowers, the weight will decrease.
Regardless of the gravity, the mass will not change. Another difference between them is that weight can be zero, but the mass will never be zero. Along with that, they are measured differently. Mass can be measured in kilograms or grams, while weight is measured in newtons.