To regularly change the time when people work.

State of difficulty or stress. cause distress or anxiety to.

To make certain something will happen or be done.

rotation of object caused by flow of moving air or water around shape of object.

blown by wind with great force. control and operation of motor vehicle. To control a vehicle so that it moves somewhere.

Issue or problems you are dealing with. To ask for or try to get information.

Cloth with strings for jumping from planes safely. To drop supplies from a plane via parachute.

used to refer to thing, no matter what.

(of sentence) imposed by judge or court but not enforced as long as no further offence is committed within specified period. To hang something or someone from something.

in most essential respects.

building with sails that turn and generate power. move in manner suggestive of sails of windmill.

child's toy consisting of stick with colored vanes that twirl in wind. spin or rotate like pinwheel.

To take place or occur.

type of aircraft which derives both lift and propulsion from one or more sets of horizontally revolving overhead rotors. Aircrafts with spinning blades at the top. transport by helicopter.