What are the units of mass and weight

Because mass and weight are separate quantities, they have different units of measure. In the International System of Units (SI), the kilogram is the basic unit of mass, and the newton is the basic unit of force. The non-SI kilogram-force is also a unit of force typically used in the measure of weight.

Mass = Measure of Matter (amount of 'stuff').

Weight = Measure of Gravitational Effect (force of mass against gravity)

Explanation:

Though the theories for both units are incomplete, their distinction lies primarily in use: mass is a scalar that represents innate property. Weight is a vector that represents the effects of spacetime on an object or space.

the force on the thing and the distance the force moves the thing

you can cut your hand off if your not