device for making and breaking connection in electric circuit. Things you move to turn electrical items on or off. To exchange or replace something for another thing.

Piece of equipment used to do work. make or operate on with machine.

worrying. on subject of or in connection with. To feel worry or anxiety about something.

Ability to understand what is important in life.

unit of information equal to one thousand million (10 ⁹) or strictly 2 ³⁰ bits. Units of data equal to 10^9 -1,000,000,000 bits.

Reflexive form of 'you', used for an emphasis. used to refer to person being addressed.

Most important, most basic or essential. preliminary election. run as opponent of incumbent in preliminary election.

statement that two values are equal. Mathematical statements showing things to be equal.

point where things meet and interact. interact with.

To make something unclear or hard to understand.

small book with blank or ruled pages for writing notes in. Books with blank pages used for writing notes.

it is unfortunate that.

flowing naturally or supplied to building through pipes and taps. The act of moving your legs to move quickly. To move your legs faster than walking.

used to emphasize speaker's belief that what is said is true.

In the expected or usual way.