The weight is variable; the mass stays the same. The mass is a property of matter that shows how much matter is in an object and is the same everywhere, both here on Earth and on other planets. The weight is a force and depends on the effect of gravity.
The weight can decrease or increase. Let’s say you’re in space; your mass will stay the same, but because gravity is weaker on the moon, your weight will decrease there.
Weight can be zero; mass can’t be zero. Since the weight directly depends on the source of gravity, if there is no gravity pull, the weight can be zero. The mass, however, cannot be zero.
The mass is a scalar value; the weight is a vector. This means that the mass has magnitude, but the weight has both magnitude and direction because gravity attracts it toward somewhere. The weight is variable since its direction goes to the center of the Earth or some other object with a gravitational force.

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