Tribometry vs. Tribology — What's the Difference?

The measurement of friction on a surface, as carried out with a tribometer.

Tribology is the science and engineering of interacting surfaces in relative motion. It includes the study and application of the principles of friction, lubrication and wear.

The science of the mechanisms of friction, lubrication, and wear of interacting surfaces that are in relative motion.

The science and engineering of interacting surfaces in relative motion; the study and application of technology using the principles of friction, lubrication and wear.

The study of the effects of friction on parts of machinery moving in contact with each other, and of methods, such as lubrication, to counteract negative effects such as wear.

The branch of engineering that deals with the interaction of surfaces in relative motion (as in bearings or gears): their design and friction and wear and lubrication