Englishfor English speakers
device
Noun
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A device is a small machine or tool.
She has a device in her kitchen for cutting garlic.
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A device is a machine or part attached to a computer, such as a keyboard, mouse, printer etc.
The mouse is an important device for using the computer.
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A device is a clever way of doing something.
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A device is a logo.
manager
Noun
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A manager is someone who manages or organizes people or things together.
Ask the manager of this project. He knows what to do next.
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A manager is a program that allows the user to control a part of the computer/software.
If a program is not responding, please use the task manager to end the program forcefully.