Cases of word usage

1) an apparatus for reducing speed or stopping motion e.g. of a bicycle, vehicle etc (brake)

2) one of a series of teeth on the rim of a wheel which transfers motion by locking into the teeth of a smaller wheel (cog)

3) of physical power and forces producing motion (dynamic)

4) a branch of physics dealing with matter in motion (dynamics)

5) any kind of machine that changes energy (from petrol, electricity etc) into motion (engine)

6) to wash the throat with liquid kept in motion by breathing air out through it; a liquid used for gargling (gargle)

7) (used of direction of motion or action) so as to be (towards the) inside (into)

8) of, relating to, produced by, motion (kinetic)

9) (usually used with a sing verb) the science of motion and force (mechanics)

10) the quantity of motion of a moving body; (of events) the force or strength (as) gained by activity (momentum)