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.

middle of circle or sphere. People or things that are attracting attention. occur in.

Use or knowledge of science in industry etc..

portion of food served to one person at one time. To make something better or less difficult.

Doing your job. action of doing work. To do your job in your company or workplace.

existing in or as part of tradition.

state of existing but not yet being developed or manifest.

used for or engaged in speech. action of conveying information or expressing one's feelings in speech. To use words to tell information, express thoughts.

To depict art objects, figures, scenes; to portray.

flowing naturally or supplied to building through pipes and taps. action or movement of runner. To start or use a computer program.

Person establishing an organization, school etc.. (Of business, idea, etc.) to fail.

use or operation of computers. To find out by calculating or estimating.

Adding extra length. Extra time allowed to complete something.

structure with roof and walls. To construct a house, office, factory.

not same as another or each other.