Across

1. a supporting bar or shaft on which, or by means of which, a wheel or wheels turn.

4. a fastener, usu. metal, having a sometimes tapered shank with a helical thread, driven into a surface by applying pressure to the head while turning it.

6. physical, mechanical, or electrical energy.

7. an instrument, such as a hammer, drill, or other hand-held device, used for doing work.

9. an elastic device or object that regains its original shape after being compressed, stretched out, or otherwise distorted.

11. plane a plane surface inclined at less than a right angle to a horizontal surface, used to roll or slide a load up or down.

12. to bring or try to bring closer by exerting force upon.

14. a man-made device, usu. driven by a motor or engine, with a system of interrelated parts that work together to perform a task.

Down

2. any of a class of basic tools consisting of a rigid bar or an equivalent, acting by pivoting around a fixed fulcrum to transfer applied force from one point to another.

3. to thrust (something) away.

5. any instrument, device, or apparatus resembling such a disk or frame in shape, motion, or function.

7. the measured ability of a force to produce turning or twisting around an axis, such as a gear or shaft.

8. an influence on the shape, motion, or other characteristics of a body or system.

10. the resistance of a surface to relative motion, as of an object sliding or rolling over it.

13. an amount of something carried; cargo or freight.