* Area: Size can be compared to area in terms of its two-dimensional measurement. For example, the size of a room can be compared to the area of a rectangle.
* Volume: Size can be compared to volume in terms of its three-dimensional measurement. For example, the size of a box can be compared to the volume of a cube.
* Mass: Size can be compared to mass in terms of its quantity of matter. For example, the size of a person can be compared to the mass of a person.
* Weight: Size can be compared to weight in terms of the force of gravity acting on it. For example, the size of a person can be compared to the weight of a person.