Newton's Laws - Mission NL6 Detailed Help

Mass is expressed in units of _____ and weight is expressed in units of ...
Definition of Mass:
The mass of an object refers to the amount of matter or stuff present in that object. It is a measure of the amount of inertia that an object possesses. The standard metric unit of mass is the kilogram (abbreviated kg); other units include grams (g), milligrams (mg), and slugs (British system).

Definition of Weight:
The weight of an object refers to the force with which gravity attracts that object to Earth (or to any other object or large body that the object is on or near). The weight of an object varies with its location since it is a quantity dependent upon the gravitational field strength. Being a force, the standard metric unit of weight is the Newton (abbreviated N); another commonly used unit is the pound (British system).