Thin fluids flow more easily than thick fluids, and therefore produce less friction.

An engine has many moving parts that produce friction.

The bearings produced more friction than in the past nine years the satellite was in orbit.

Turning the shaft pushes the brake shoes against the drum, producing friction.

For years, those images have produced controversy and friction here.

It can also produce friction, for example on a violin bow or sportsman's footwear.

Without the sand particles to produce friction, the worm-lion would find it much more difficult to complete this crucial part of its development.

As the 1960's progressed, this choice of music began to produce friction between Staulcup and the teenage prom crowds.

That has left him to spend much of his time on foreign policy and military matters, producing friction with Anthony Lake, the national security adviser.

Many artworks in the project produced friction between artists and architects, and Untitled was no exception.