The absolute value is the distance from the point on the number axis to the origin. Because the distance can only be 0 or a positive number, the absolute value can only be 0 or a positive number.

The opposite number is a point on the number axis that is equal to the origin, and there are two points that are equal to a certain value from the origin. These two points are in opposite directions and are located on both sides of the origin of the number axis.